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Neko [114]
2 years ago
14

I struggle pls help me ;-;

Mathematics
1 answer:
Paladinen [302]2 years ago
4 0

Answer:

8

Step-by-step explanation:

you have to work out 8 times 10 witch is 80  and then you do 54 take waya 80 divided by 2

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A circle has an area of 36pi square inches. Find the radius
zmey [24]
<span>circle area = </span>πr²   ⇒

\pi r^2=36 \pi  \\ r^2= \frac{36 \pi }{ \pi }  \\ r^2=36 \\ r= \sqrt{36}  \\ r=6 \ in
6 0
3 years ago
the Marked price of a mobile is rupees 3500 and the shopkeeper allows 10% discount how much should the customer pay for it after
Papessa [141]

Answer:

3500 - 10% = 3150 rupees

Step-by-step explanation:

the customer will pay 3150 rupees

3 0
2 years ago
if i have a 65.05% (D) in a class and i get a 100% on an assignment that worth 10% of my grade, what would my grade be
lord [1]
I’m pretty sure you would have a 72% which would be a low C but maybe still passing. My schools passing grade is 70%. You would have to see what a passing grade is in your school.
4 0
2 years ago
Find the mean of the data summarized in the given frequency distribution. Compare the computed mean to the actual mean of 47.3 m
Harlamova29_29 [7]

Answer:

47.4167

D. The computed mean is close to the actual mean because the difference between the means is less than 5%

Step-by-step explanation:

Given the distribution :

Speed(m/hr) ___ midpoint(x) ___ F ___fx

42 - 45 _______ 43.5 ________21 __ 913.5

46 - 49 _______47.5 _________15 __712.5

50 - 53 _______ 51.5 _________6 __ 309

54 - 57 _______ 55.5 ________ 4 ___ 222

58 - 61 ________59.5 ________ 2 ___ 119

The midpoint, x= sum of lower and upper boundary divided by 2

For instance, (42 + 45) / 2 = 43.5

The computed mean, Σfx / Σf = 2276 / 48 = 47.4167

Actual mean = 47.3 miles

(47.4167 - 47.3) / 47.3 * 100% = 0.24%

6 0
2 years ago
Suppose you have 100 ft of string to rope off a rectangular section for a bake sale at a school Fair. The function A=x^2+50x giv
cupoosta [38]

Answer:

Therefore the width is 25 feet for getting maximum area.

The maximum area of the rectangle is 625 square feet.

Therefore the range is 0≤A≤625.

Step-by-step explanation:

Given function is

A = - x²+50x

We know that ,

If y = ax²+bx+c

For the maximum x=-\frac{b}{2a}

Here a = -1 , b= 50 and c=0

Therefore the width x= -\frac{50}{2.(-1)} = 25

Therefore the width is 25 feet for getting maximum area.

The maximum area =[ -(25)²+50.25] square feet

                                 = 625 square feet

The area can not be negative and maximum area is 625 square feet.

Therefore the range is 0≤A≤625.

5 0
3 years ago
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