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rjkz [21]
3 years ago
12

Can somebody plz help answer these word prob questions plz thanks! (Grade7math( btw :)

Mathematics
1 answer:
Illusion [34]3 years ago
4 0

Answer:

3:1

8:5

Step-by-step explanation:

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Find the value of a.<br> 19 in<br> a<br> 99 in<br> Perimeter<br> 238 inches
Sonja [21]

Answer:

the answer is 60 inches

Step-by-step explanation:

you have to subtract the perimeter and the numbers that are shown after you add them

238-118= 120 then you have to divide that in half wich =60.

so (A)= to 60 inches.

6 0
3 years ago
He takes a random sample of 49 recent charterholders and computes a mean salary of $172,000 with a standard deviation of $35,000
uysha [10]

Answer:

the 90% of confidence intervals for the average salary of a CFA charter holder

 (1,63,775 , 1,80,000)

Step-by-step explanation:

<u>Explanation</u>:-

random sample of n = 49 recent charter holders

mean of sample (x⁻) =  $172,000

standard deviation of sample( S) = $35,000

Level of significance α= 1.645

<u> 90% confidence interval</u>

(x^{-} - Z_{\alpha } \frac{s}{\sqrt{n} } , x^{-} + Z_{\alpha } \frac{s}{\sqrt{n} })

(172000 - 1.645 \frac{35000}{\sqrt{49} } , 172000 +1.645 \frac{35000}{\sqrt{49} })

on calculation , we get

(1,63,775 , 1,80,000)

The mean value lies between the 90% of confidence intervals

(1,63,775 , 1,80,000)

4 0
3 years ago
Solve for x.<br><br> 16 = -2x - 1<br><br> Solve for x.<br><br> 16 = -2x - 1<br><br> pls
kupik [55]

Answer:

1. 7

Step-by-step explanation:

4 0
3 years ago
What is 3053 divided by 49
Alex787 [66]

Answer:

62.30

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
2x+3y=-27 is one equation in a coincidental system of two linear equations. the other equation is __y=__x-102.
Snezhnost [94]
Given:

An equation in a coincidental system of two linear equations:

2x + 3y = -27

The other equation is 

_y = _x - 102

Rearrange the second equation to be identical to the first

_y - _x = -102

Determine the factor, -102/-27 = 3.78

for x, 2 * 3.78 = 7.56
for y, 3 * 3.78 = 11.33

The second equation, 11.33y - 7.56x = -102
3 0
3 years ago
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