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3 years ago

Please help!!!!! giving brainlist

Mathematics

2 answers:

Lilit [14]3 years ago

7 0

Answer:

1. 25 2. 6.5 3. 10

Step-by-step explanation:

I want brainlyest

krok68 [10]3 years ago

5 0

Answer:

A. 25 ounces B. 6.5 ounces C. 10 ounces

Step-by-step explanation:

$\frac{3}{5}x = 15\\\implies x = \frac{5}{3}\times{15}\\\implies x = 25$

$y = 15 - 8.5\\= 6.5$

$\frac{8}{5}z = 16\\\implies z = \frac{5}{8}\times16\\\implies z = 10$

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A CD costs 15 dollars and 50 cents before tax. What is the total cost after a 6 percent sales tax is added?

Vitek1552 [10]

Answer:

16.43

Step-by-step explanation:

gib brainliest

5 0

3 years ago

8. You have 51 coins made up of dimes

Maslowich

Answer:

Solve value problems by setting up a system of equations. ... Once the table is filled in we can easily make equations by adding each column, setting it ... Dime d. 10. 10d. Total. 11. 185. We have 11 coins total.This is the number total. ... twice as many dimes, than we multiply the other variable (nickels) by two.

Step-by-step explanation:

5 0

3 years ago

The body temperatures of a group of healthy adults have a bell-shaped distribution with a mean of 98.18 F and a standard deviat

S_A_V [24]

Answer:

99.7%

Step-by-step explanation:

Empirical rule formula states that:

• 68% of data falls within 1 standard deviation from the mean - that means between μ - σ and μ + σ.

• 95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ.

• 99.7% of data falls within 3 standard deviations from the mean - between μ - 3σ and μ + 3σ.

From the question, we have mean of 98.18 F and a standard deviation of 0.65 F

The approximate percentage of healthy adults with body temperatures between 96.23 F and100.13 F is

μ - 3σ

= 98.18 - 3(0.65)

= 98.18 - 1.95

= 96.23 F

μ + 3σ.

98.18 + 3(0.65)

= 98.18 + 1.95

= 100.13 F

Therefore, the approximate percentage of healthy adults with body temperatures between 96.23 F and 100.13 F which is within 3 standard deviations of the mean is 99.7%

6 0

4 years ago

In the figure below, the segment is parallel to one side of the triangle. Find the value of x.

g100num [7]

Answer: x= . $18\frac{2}{3}$ .

Step-by-step explanation: We are given a segment parallel to the base.

Therefore, sides of big triangle and small triangles would be in proportion.

$\frac{One \ Side \ of\ big \ triangle }{One \ Side \ of\ small \ triangle} =\frac{Other \ Side \ of\ big \ triangle }{Other \ Side \ of\ small \ triangle}$

Setting values for the shown triangle, we get

$\frac{x+(x+7)}{x} =\frac{16+22}{22}$

$\frac{2x+7}{x} =\frac{38}{16}$

On cross multiplication, we get

16(2x+7) = 38(x)

32x + 112 = 38x.

Subtracting 112 from both sides, we get

32x + 112-112 = 38x -112

32x = 38x-112

Subtracting 38x from both sides, we get

32x-38x = 38x-38x-112

-6x = -112

Dividing both sides by -6, we get

$\frac{-6x}{-6} =\frac{-112}{-6}$

x= . $18\frac{2}{3}$ .

<h3>Therefore, x= . $18\frac{2}{3}$ .</h3>

7 0

3 years ago

What is the area of this triangle?

amid [387]

We can solve for the 3 triangle sides.
The left side is easy 6.
Second side² = 7² + 4²
Second side² = 49 + 16
Second side = square root (65)
Second side = 8.0622577483 
Third Side² = 7² + 2²
Third Side² = 53
Third Side = 7.2801098893 
When we know 3 sides, we use Heron's formula for calculating area:
Perimeter = 21.3423676376 
Semi-Perimeter = 10.6711838188 
Using Heron's Formula
area = square root (10.6711838188 * 4.6711838188 * 2.6089260705 * 3.3910739295 )
area = square root (441)
area = 21

Yes, it's just that "easy". LOL

7 0

4 years ago