question 79 and 80. can someone please help me? thanks to whoever does

The quantity of salt in grams needed to complete the experiment is 180 grams.

Ratio expresses the relationship between two or more numbers. It shows the frequency of the number of times that one value is contained within other value(s).

Quantity of salt needed = (grams of baking soda x ratio of salt) / ratio of baking soda

(3 x 420) / 7 = 180 grams

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The equation that shows Courtney rode 180 mlles more than Breanna rode is c = b + 180

An equation is an expression that shows the relationship between two or more numbers and variables.

Let b represent the number of miles rode by Breanna and c represent that of Courtney.

c = b + 180

The equation that shows Courtney rode 180 mlles more than Breanna rode is c = b + 180

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hope it helps...!!!

Answer:

Check the image That’s I provided

The correct answer will be option c the standard deduction is $1,613 more than chris’s deductions.

Tax is a compulsory contribution to state revenue, levied by the government on workers' income and business profits, or added to the cost of some goods, services, and transactions.

Chris's deductions for tax return = claim from property taxes +claim from medical expenses+claim form state income tax

= $1813+$1513+$76

= $4087

Standard deductions = $5700

Difference between standard deduction and Chris's deductions

= 5700-408

= $1613

Hence standard deductions is better than Chris's deductions by $1613

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Answer: (C)

Step-by-step explanation:

Chris's deductions for tax return = claim from property taxes +claim from medical expenses+claim form state income tax

             = $1813+$1513+$761

             = $4087

Standard deductions = $5700

Difference between standard deduction and Chris's deductions = 5700-408

                                                                 = $1613

Hence standard deductions is better than Chris's deductions by $1613

Therefore, option (C) is correct.

weekly raise= $145

an integer describing how the raise will affect her paycheck.

Let the 1st paycheck be x (integer).

Mrs. Rodger got a weekly raise of $ 145.

So after completing the 1st week she will get $ (x+145).

Similarly after completing the 2nd week she will get $ (x + 145) + $ 145.

= $ (x + 145 + 145)

= $ (x + 290)

therefore, in this way end of every week her salary will increase by $ 145.

Answer:

CA ≈ 10 cm

Step-by-step explanation:

Since we know 2 sides and 1 angle we can use the Law of Cosine to find the third side.

CA = √(AB²+CB²- 2· AB· CB· cos 50°)

CA = √(7² +13² -2·7·13· cos 50°)

CA = √(49 +169 -116.987345)

CA = √101.012655

CA = 10.0505

CA ≈ 10 cm

Answer:

A = 0.43      B = 0.49

Step-by-step explanation:

For A: The options are between 0.40 and 0.45. A is plotted on the 3rd line from 0.40. That makes the answer 0.43.

For B: It is in the middle of 0.45 and 0.50. It is plotted on the 4th line from 0.45, which is 0.49.

A = 0.43; B = 0.49

letter b :) its a little above 2, but not enough to be 2.5

Answer:

1. x - 12 = 14 {brother's age minus 12 equals sister's age}

x = 26 {added 12 to each side}

Your brother is 26.

2. x+8.95=21.35  

now you must subtract 8.95 by both sides which equals x =12.4

3. 29 compact cars.

The total number of vehicle is 37. So you can just subtract 37 by 8 which gives 29.

4. x +73=95

subtract both sides by 73. which equals 22

5. $160      He originally spent $123.45 and was left with $36.55 you just add both numbers and that's what you get altogether.

6. X-225=548

Solve for x

Add 225 to both sides. So x - 753

I hope this helps! Please dont mark this wrong or delete this i worked really hard! I hope this helps tho! :)

Answer:

6.5 inches

Step-by-step explanation:

Finding the height of the cylinder

Volume = 936 π in³

diameter = 24 inches

r = 24 ÷ 2

r = 12 inches

Volume = 936π

πr²h      = 936π

         [tex]\bf \sf h= \dfrac{936 \pi }{r^2*\pi }\\\\h = \dfrac{936 * \pi}{12*12* \pi}\\\\h = \dfrac{936}{12*12}\\\\\\\boxed{height = 6.5 \ inches}[/tex]

Answer:

6.5 i got 100

Step-by-step explanation:

Answer:

11 + 12 = 23

Step-by-step explanation:

The total annual FICA tax for an annual salary of $38,480 is D $2,943.72.

FICA tax comprises Social security tax + Medicare tax.

Where: Social security tax=6.2%, Medicare tax=1.45%, FICA tax =7.65%

The total annual fica tax for an annual salary of $38,480 is given by;

FICA tax=($38,480×6.2%)+($38,480×1.45%)

FICA tax=$2,385.76+$557.96

FICA tax= $2,943.72

Hence, the total annual FICA tax for an annual salary of $38,480 is D $2,943.72.

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Each angles of a polygon with 5 sides and more, that is pentagon, hexagon and so on have angles which are all obtuse.

An angle is formed from the intersection of two or more lines. Types of angles are acute, obtuse and right angled.

An obtuse angle is an angle which is greater than 90 degrees.

Each angles of a polygon with 5 sides and more, that is pentagon, hexagon and so on have angles which are all obtuse.

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Answer:

there all below

Step-by-step explanation:

Mean: 51.5

There is no mode so you would put "No mode.''

Median: 51

hope this helps <33

Answer: Right angled triangle

Step-by-step explanation: Find picture attached

Answer:

  u = 12

Step-by-step explanation:

To solve for the variable, undo the operations done to it, starting with the last one.

  u/3 -2.25 = 1.75 . . . . . . given

  u/3 = 4.00 . . . . . . . . add 2.25 to both sides

  u = 12 . . . . . . . . . . multiply both sides by 3

Answer:

[tex]a - 10 = \frac{a}{5 } - 2 \\ \\ \implies \: a - 10 = \frac{a - 10}{5} \\ \\ \implies \: 5a - 50 = a - 10 \\ \\ \implies \: 5a - a = - 10 + 50 \\ \\ \implies \: 4a = 40 \\ \\ \implies \: a = \cancel\frac{40}{4} \\ \\ \implies \: a = 10[/tex]

hope helpful ~

Answer:

a-10=a/5-2

a-10=a/3

3(a-10=a/3)

3a-30=a

3a-a=30

2a=30

a=15

The value of the discriminant is 25, there are 2 x-intercepts does this function have and the 2 number of zeros for this function has.

The standard form of the quadratic equation is,

[tex]ax^2+bx+c=0[/tex]

Here,(a,b, c) is the real numbers and (x) is the variable.

For this equation, the discriminant value can be given as,

[tex]D=b^2-4ac[/tex]

The given quadratic function is,

[tex]f(x) = 3x^2 +7x+ 2[/tex]

Compare it with standard form, we get,

[tex]a=3\\b=7\\c=2[/tex]

Thus, the value of discriminant is,

[tex]D=(7)^2-4(3)(2)D=49-24\\D=25[/tex]

The value of discriminant is positive. Thus, the quadratic equation has two real solution and 2 zeros.

Hence, the value of the discriminant is 25, there are 2 x-intercepts does this function have and the 2 number of zeros for this function has.

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Answer:

The value of the discriminant is 25, there are 2 x-intercepts does this function have and the 2 number of zeros for this function has.

How to find the value of discriminant?

The standard form of the quadratic equation is,

Here,(a,b, c) is the real numbers and (x) is the variable.

For this equation, the discriminant value can be given as,

The given quadratic function is,

Compare it with standard form, we get,

Thus, the value of discriminant is,

The value of discriminant is positive. Thus, the quadratic equation has two real solution and 2 zeros.

Hence, the value of the discriminant is 25, there are 2 x-intercepts does this function have and the 2 number of zeros for this function has.

Learn more about the discriminant here;

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Step-by-step explanation:

The bus tickets and price are illustrations of a quadratic function, and the maximum revenue the bus company can earn is $5107.6

The variable representation used in this scenario are:

The price is given as:

Price = $156

The number of seats is given as:

Seats = 56

When the bus is at half capacity, we have:

Seats = 28

As the price decreases by $5, the rider gains 2 more.

So, the revenue equation is:

y = (156 - 5x)(28 + 2x)

Expand

y = 4368 - 140x + 312x - 10x²

Differentiate

y' = 0 - 140 + 312 - 20x

Evaluate the sum

y' = 172 - 20x

Equate to 0

172 - 20x =0

Add 20x to both sides

20x = 172

Divide both sides by 20

x = 8.6

Substitute x = 8.6 in y = (156 - 5x)(28 + 2x)

y = (156 - 5 * 8.6)(28 + 2 * 8.6)

Evaluate

y = 5107.6

Hence, the maximum revenue the bus company can earn is $5107.6

#SPJ1

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Answer:

Rebecca did a shorter run then Stacy

Rebecca ran a longer distance than Josie

Josie ran a longer distance than Finn

Step-by-step explanation:

if Rebecca’s distance was shorter than Stacy’s and longer than Josie, then Stacy’s running distance would have to be more that Josie’s and Finn’s.

1.Stacy

2.Rebecca

3.Josie

4.Finn

For any polygon:-

Here

Base is triangle

Area=

Volume:-

Answer:

16

Step-by-step explanation:

Lets first solve the right side :)

(3^5)^4 -> 3^20 = 3486784401

Now lets solve the left side :)

When we multiply the bases to exponets, we add the exponets together :)

Lets see what numbers equal 20 when added :)

4 + 4 = 8 Nope!!

4 + 5 = 9 Not at all!!

4 + 20 = 24 Too big!!

4 + 16 = 20 Perfect!!

Have an amazing day!!

Please rate and mark brainliest!!

Answer:

The answer you are looking for is in D- 16

Explanation:

Included in attachment

Answer:

X=6

Step-by-step explanation:

1. 6(2x-10)+22=3x+16

2. 12x-60+22=3x+16

Is that the answer you are looking for

Answer:

-3

Step-by-step explanation:

The general rule can be found by noticing patterns such as the numbers get smaller by 3 from the first term 3 towards the next 0 and towards next one -3

term 1: 3

term 2 : 3 -3 = 0

term 3 : 0 -3 = -3

The general rule of 3;0;-3​ is subtract 3

Answer: [tex](x-7)^2+(y+2)^2=11^2[/tex] ; [tex]A=121\pi[/tex]

Step-by-step explanation:

I have never done a problem like this, so this is my first time attempting it.

The standard form for the equation of a circle is:

[tex](x-a)^2+(y-b)^2=r^2[/tex]

Begin by grouping the 'x' terms and 'y' terms:

[tex](x^2-14x)+(y^2+4y-68)=0[/tex]

Complete the square for the second polynomial:

[tex](\frac{b}{2} )^2=(\frac{4}{2} )^2=4[/tex]

[tex](x^2-14x)+(y^2+4y+4-4-68)=0[/tex]

[tex](x^2-14x)+(y^2+4y+4)-4-68=0[/tex]

[tex](x^2-14x)+(y^2+4y+4)-72=0[/tex]

[tex](x^2-14x)+(y+2)^2-72=0[/tex]

Do the exact same process with the other polynomial:

[tex](x^2-14x-72)+(y+2)^2=0[/tex]

Complete the square:

[tex](\frac{14}{2} )^2=49[/tex]

[tex](x^2-14x+49-49-72)+(y+2)^2=0[/tex]

[tex](x^2-14x+49)-49-72+(y+2)^2=0[/tex]

[tex](x^2-14x+49)-121+(y+2)^2=0[/tex]

[tex](x-7)^2-121+(y+2)^2=0[/tex]

Bring the 121 to the other side to get:

[tex](x-7)^2+(y+2)^2=121[/tex]

[tex](x-7)^2+(y+2)^2=11^2[/tex]

The above expression is the equation of our circle in standard form. It is centered at the coordinates (7, -2) and has a radius of 11 units. The area of a circle if given by:

[tex]A=\pi r^2=121\pi[/tex]

Answer:

the answer is 1

Step-by-step explanation:

ok

Answer:

1

Step-by-step explanation:

X power y would be written as 2^0, and any number to the power of 0 is equal to 1.

1

I didn't know this was possible so I looked it up :)

Have an amazing day/afternoon/night! <3

Answer:

B. x² + y² - 4x +8y +11 = 0

Step-by-step explanation:

B. is the only one that represents a circle. Option A forms an oval, option C forms an X, and option D forms a regular function.

hope this helps!

Answer:

In the survey, 123 students picked math as their favorite subject.

Step-by-step explanation:

Answer:123 was chosen by the students since it is their favorite subject.