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3 years ago

Determine the value of y, if x is 5. y = x2-7

Mathematics

2 answers:

lions [1.4K]3 years ago

5 0

Answer:

Y = 3

Step-by-step explanation:

5 times 2 is 10 minus 7 is 3.

Anika [276]3 years ago

5 0

Answer:

y=3

Step-by-step explanation:

y= x*2-7 x=5

y= 5*2-7

PEMDAS states you do multiplication then addition

y= 10-7

y= 3

Hope this helps!

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Listed below are pulse rates (beats per minute) from samples of adult males and females. Find the mean and median for each of

gulaghasi [49]

Answer:

Male: Median: 64.5 and the mean is 70.6

Female: median: 83 and mean is: 79.93

Step-by-step explanation:

For median, you place all of the numbers from lowest to highest, and then find the number in the middle.

For Mean, add up all the numbers, then divide by the amount of numbers there.

For example.

30/5= 6

3 0

2 years ago

Which expression is equivalent to the following complex fraction?

True [87]

Answer:

Step-by-step explanation:

Given the complex fraction;

$-\frac{2}{x} +\frac{5}{y} / \frac{3}{y} - \frac{2}{x} \\$

First we will find the LCM of the numerator and the denominator as shown below;

$\frac{-2y+5x}{xy} /\frac{3x-2y}{xy}$

Then we divide both equation by multiplying the numerator by the reciprocal of the denominator as shown;

$= \frac{-2y+5x}{xy} * \frac{xy}{3x-2y} \\= \frac{-2y+5x}{3x-2y} \\$

This gives the required answer

5 0

3 years ago

Josh and Lucy share some money in the ratio of 3 : 7 they share 84 in total how much money does Josh receive

Ann [662]

27.30 is the answer

7 0

2 years ago

A triangular pyramid and its net are shown. Rain uses Calculations below to conclude that the surface area of a triangular pyram

Harman [31]

Answer:

Rain is correct, calculates correctly, 238.5 square inches

Step-by-step explanation:

The given triangular pyramid is shown with the dimensions.

The surface area of the triangular pyramid is given by :

$A=\frac{1}{2}\left(a \times b\right) + 3\left(\frac{1}{2}\times b\times s\right)$

$A=\frac{1}{2}\left(10 \times 8.7\right) + 3\left(\frac{1}{2}\times 10\times 13\right)$

$A=43.5+(3\times 65)$

$A=43.5+195$

$A=238.5 \ \text{inche}^2$

Therefore, the surface area of the triangular pyramid is = 238.5 square inches.

5 0

3 years ago

gary is making a cakerecipe that requires 3/4 cup of flour. But gary wants to make the cake half of the size that the recipe cal

vfiekz [6]

Answer:

0.375 cups or 3/8

Step-by-step explanation:

divide 3/4, or 0.75 by 2!

8 0

3 years ago