Answer:
i dont know how to use sign
1.A pile of 15 boxes is 3 metres high. What is the depth of each box?
2.An angle measuring 60 degrees is measured as 62 degrees. What is the percentage error correct to 3 significant figures?
solve all for brainiest
Answer:
#1
The depth of each box:
3 m / 15 = 300 cm / 15 = 20 cm#2
The error is:
62 - 60 = 2 degreesThe percentage error:
2/60*100% = 3.33% (3 sf)Answer:
#11 m = 100 cm
3 m = 3 × 100 = 300 cm
Depth of one box = 300/15 = 20 cm
#2Percentage error = Error/Real measure × 100
(62 - 60)/60 × 100
2/3 × 5
10/3
3(in significant figures)
Similarity and Congruence
Two figures are said to be SIMILAR if they are the same shape. In more mathematical language, two figures are similar if their corresponding angles are congruent, and the ratios of the lengths of their corresponding sides are equal. This common ratio is called the scale factor.
Each pair of figures is similar. Find the value of the missing side (x).
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Answer:
3 in
Step-by-step explanation:
Ratios of corresponding sides are equal, so we have the proportion ...
x/(5 in) = (6 in)/(10 in)
x = (5 in)(6/10) = 3 in
The missing side (x) is 3 in.
Evaluate the expression below for x = 5. 5(x + 7)
Answer:
60
Step-by-step explanation:
5(x + 7)
when x is equal to 5, then
5(x + 7)5(5+7)5(12)5×1260What is the equation of a line parallel to y=1/3x-4 that passes through (9,8)?
Step-by-step explanation:
Given line y=1/3x-4
slope of given line m=1/3
Slope of required line :
m=1/3
As lines are parallel then slope of lines are equal.
Using point slope form:
y-y1=m(x-x1)
p(x1,y1)=(9,8)
y-8=1/3(x-9)
3y-24=x-9
x-3y-9+24=0
x-3y+15=0
Note:if you need to ask any question please let me know.
Can Anyone help me with this, please? :00
Answer:
Option C is your answer
Step-by-step explanation:
please mark as brainlyest
Evaluate the exponent expression for a = –2 and b = 3.
Answer:
The choose B) -9/8
Step-by-step explanation:
[tex] \frac{ - 2a ^{ - 3 } {b}^{2} }{a} \\ \frac{ - 2( - 2)^{ - 3} {3}^{2} }{ - 2} \\ \frac{ - 2(9)}{ - 2( - 8)} = - \frac{9}{8} [/tex]
I hope I helped you^_^
simplify (y + 5 )-( y - 6)
Answer:
11
Step-by-step explanation:
(y+5)-(y-6)
y+5-y+6(opening the bracket)
5+6
11
Answer:
11
Step-by-step explanation:
(y+5) - (y-6) = y + 5 - y + 6 =
0y + 11 = 11
Remember, y - y = 1y - 1y = 0y or 0, and - (y-6) = -1 (y-6) = -y + 6
Nine times the difference of a number and 4 is the same as the product of 2 and the same
number plus 10. What is the number?
Answer:
x = 8
Step-by-step explanation:
9(x - 4) = 2(x + 10)
9x - 36 = 2x + 20
7x = 56
x = 8
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Find a2 and a3 for the geometric sequence 4, a2, a3, 108.
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Answer:
a2 = 12
a3 = 36
Step-by-step explanation:
Terms of a geometric sequence have a common ratio. If we call that ratio r, then we have ...
a2 = 4r
a3 = (a2)r = 4r^2
108 = (a3)r = 4r^3
27 = r^3 . . . . . . . . . . . divide by 4
3 = r . . . . . . . . . . cube root
__
a2 = 4(3) = 12
a3 = 12(3) = 36
7. After 8 months, Joellen has lost 75 pounds. This is a 30% decrease in her starting weight. Find
her starting weight.
Answer:
Started 100% = x pounds
30% = 75 pounds
x= 75*100÷30= 250 pounds
Starting Weight = 250 pounds
The percentage is calculated by dividing the required value by the total value and multiplying by 100.
Required percentage value = a
total value = b
Percentage = a/b x 100
30% = 75 pounds
100% = 250 pounds
The starting weight was 250 pounds.
What is a percentage?
The percentage is calculated by dividing the required value by the total value and multiplying by 100.
Required percentage value = a
total value = b
Percentage = a/b x 100
Example:
50% = 50/100 = 1/2
25% = 25/100 = 1/4
20% = 20/100 = 1/5
10% = 10/100 = 1/10
We have,
30% decrease = 75 pounds
Starting weight = 100%
Now,
30% = 75
Multiply 100/30 on both sides.
100/30 x 30% = 100/30 x 75 pounds
100% = 10/3x 75 pounds
100% = 10 x 25 pounds
100% = 250 pounds
Thus,
The starting weight was 250 pounds.
Learn more about percentages here:
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Find the unit rate. 7 square foot in - hour
i need more info. Is this the whole question?
The leaning tower of Pisa is approximately 179 ft in “height” and is approximately 16.5 ft out of plumb. Find the angle at which it deviates from the vertical.
The angle at which the leaning tower of Pisa deviates from the vertical is approximately 5.31 degrees.
To find the angle at which the leaning tower of Pisa deviates from the vertical, we can use the concept of tangent function.
First, we need to calculate the distance that the top of the tower is displaced from the vertical axis. This can be done using the Pythagorean theorem, which states that the displacement (d) is equal to the square root of the height of the tower (h) squared plus the amount the tower is out of plumb (p) squared:
d = √(h² + p²)
d = √(179² + 16.5²)
d = 180.14 ft
Next, we can use the tangent function to find the angle of deviation (θ):
tan(θ) = p/h
tan(θ) = 16.5/179
θ = tan⁻¹(16.5/179)
θ ≈ 5.31 degrees
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Restaurant A's chicken salad contains the same number of grams of fat as the chicken salad of restaurant C. Restaurant B's chicken salad contains 8 more grams of fat than restaurant A's chicken salad. If the total amount of fat in all three salads is 77 grams, find the number of grams of fat in each salad.
Restaurant A's chicken salad has grams of fat.
Restaurant B's chicken salad has grams of fat.
Restaurant C's chicken salad has grams of fat.
Answer:
Restaurant A and C: 23 grams of fat
Restaurant B: 31 grams of fat
Answer:
Restaurant A's chicken salad has 7.7 grams of fat.
Restaurant B's chicken salad has 61.6 grams of fat.
Restaurant C's chicken salad has 7.7 grams of fat.
Step-by-step explanation:
Restaurant A = C
Restaurant B = 8 × Restaurant A
Total Grams of Salad = 77
Let Reataurat A and C be x
and Reataurant B be 8x
so
A + B + C = 77
x + 8x + x = 77
2x + 8x = 77
10x = 77
x = 77 ÷ 10
x = 7.7
Restaurant A's chicken salad has 7.7 grams of fat.
Restaurant B's chicken salad has 61.6 grams of fat.
Restaurant C's chicken salad has 7.7 grams of fat.
If u want to crass check so
7.7 + 61.6 + 7.7 =
69.3 + 7.7 =
= 77
The ________ is the actual population of individuals, or clusters, from which a random sample will be drawn.
I will mark as brainliest:)
Answer:d
Step-by-step explanation:
1
What is the value of
60?
O
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!! MATH EMERGENCY !! Hey Can someone please help me Ill give as many points as i can and make brainiest i just really need help
Answer:
B
Step-by-step explanation:
it simplifies to [tex]x^{4}[/tex]
Does this scatter plot show a positive trend, a negative trend, or no trend?
Answer:
This shows no trend.
Step-by-step explanation:
Answer:
No Trend
Step-by-step explanation:
The scatter plot is everywhere and there is no pattern within it therefore it has no trend.
Hope it helps
If an atom has 12
positively-charged
protons and 12
negatively charged
electrons, what is its
total charge?
Answer:
if both the electron and proton have the same number then the charge of an atom is neutral because each proton executes each neutron
make d the subject of the formula h= d/3 + 2
Answer:
d= 3h-6
Step-by-step explanation:
h= d/3+2
h-2= d/3
d= 3(h-2)= 3h-6
Answer:
d = 3h - 6
Step-by-step explanation:
[tex]h = \frac{d}{3} + 2[/tex]
subtract 2 on all sides :
[tex](h) - 2 = (\frac{d}{3} + 2) - 2 \\ \\ h - 2 = \frac{d}{3} [/tex]
multiply 3 on all sides:
[tex](h - 2) \times 3= \frac{d}{3} \times 3 \\ \\ 3(h - 2) = d[/tex]
open bracket:
[tex]d = 3h - 6[/tex]
- Three times the quantity two decreased by x is nine.
Step-by-step explanation:
3(2-x)=9
this is the answer to the statement
The expression three times the quantity two decreased by x is nine is - 1
A quantity two decreased by x can be expressed thus :
(2 - x)Multiplying the quantity by 3 :
3(2 - x)The expression can be written Mathematically as thus : 3(2 - x) = 9
The expression can be expanded further as :
3(2 - x) = 9
6 - 3x = 9
Collect like terms
-3x = 9 - 6
-3x = 3
x = (3 ÷ -3)
x = - 1
Therefore, the expression equates to - 1
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What is this expression in simplified form?
Answer:
B is answer.
Step-by-step explanation:
B is answer.
Someone help me please!!!
Answer:
Second one
Step-by-step explanation:
By is postive and C is positive so there wouldn't be any negatives or minus signs
Answer:
The Second One!
Step-by-step explanation:
Is 0.03456 a rational number
Answer:
Yes. It is a rational number.
Last week Zurina worked the following days and times:
Day 1: 4 hours, 15 minutes
Day 2: 5 hours, 0 minutes
Day 3: 6 hours, 45 minutes
Find Zurina's total time worked in decimal hours. (4 points)
14.45
15.60
16.00
Answer:
46 hours and 5 minutes she worked
Answer is 15.60
we can say 4h and 15 min is 4.15
4.15 + 5.00 + 6.45 =
15.60
so the answer would be B
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I need help with this problem.
How do I do it?
Answer:
20
Step-by-step explanation:
For the area of a rectangle we use A = L* W
We know area or A = 420
and we know length or L = 21
Now we need to find the width or W
(420) = (21) * W
Divide both sides of the equation by 21 to isolate the variable.
That leaves us with:
W = 20
The graph of a linear function passes through the points (-
3, -4) and (2, -1)
Find the slope of this function?
Answer:
3/5
Step-by-step explanation:
y2 - y1 / x2 - x1
-1 - (-4) / 2 - (-3)
3/5
3/5 is the slope.
what is the median of the number 10 12 13 15 16 19 25?
Answer:
15 is the middle number
Step-by-step explanation:
BECAUSE IF YOU COUNT FROM THE LEFT AND RIGHT AND WHICH NUMBER APPEARS IN THE MIDDLE IS YOUR MEDIAN
Answer:
15
Step-by-step explanation:
this asks for the median, and not the mean value.
please notice that these 2 values are often if not mostly different from each other.
the median just defines the middle of the value interval, so that half of the different values are left, and half are right of that median value.
here we have 7 values. do we find one, so that 3 other values are smaller, and 3 other values are bigger than that ?
that is 15.
10, 12, 13 are smaller.
16, 19 and 25 are bigger.
so, 15 is the median.
88.98 to the nearest tenth
Answer:
89 is the answer
Step-by-step explanation:
88.98
= 89
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Answer:
89.0
Step-by-step explanation:
One way to round a number is to add half the place value you're rounding to, then truncate at the desired place value.
Here, we want to round to a tenth (0.1), so we first add half that value:
88.98 + 0.05 = 89.03
Now, we throw away all digits after the tenths place.
89.0 . . . . our rounded value
please help me with these ones ok
Answer:
first question: reflection on the y axis
second question: reflection on the x axis
Step-by-step explanation: