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2 years ago

pls help solve 7,8,9, and 10 for brainliest

Mathematics

1 answer:

ivanzaharov [21]2 years ago

7 0

Answer:

#8 : x=15−y

#9: $\frac{c}{b} -\frac{ax}{b}$

#10: y=2A−x

#7: T= $\frac{P}{IR}$

Step-by-step explanation:

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Please look at the picture and answer it thank you.

ElenaW [278]

Answer:

x = 17

Step-by-step explanation:

The sum of all angle measures in any triangle is 180 degrees.

Thus, 23 + 5x - 18 + 90 = 180.

Step 1: Simplify both sides of the equation.

$(5x)+(23+90-18)=180$
$5x+95=180$

Step 2: Subtract 95 from both sides.

$5x+95-95=180-95$
$5x=85$

Step 3: Divide both sides by 5.

$5x/5=85/5$
$x=17$

Step 4: Check if solution is correct.

$(5*17-18)+23+90=180$
$67+23+90=180$
$180=180$

Thus, x = 17.

6 0

2 years ago

The measure of angle A to the nearest tenth of a degree is: A 18.5 B 19.5 C 20.5

Andrew [12]

Answer:

Step-by-step explanation:

This is a right triangle as shown by the right angle.

The side opposite the right angle is the hypotenuse, which is 9.
The side opposite angle A is 3.

So we have the opposite of A and the hypotenuse.

The trigonometric ratio that relates opposite side to hypotenuse is SINE.

$sin\theta=\frac{opposite}{hypotenuse}$

Since, we need angle A, $\theta$ is A, opposite side is 3, and hypotenuse is 9, we substitute:

$sinA=\frac{3}{9}\\sinA=\frac{1}{3}$

To solve for the angle, we use our calculator and find the inverse sin of $\frac{1}{3}$ :

$A=sin^{-1}(\frac{1}{3})\\A=19.47$

Rounding to nearest tenth of a degree:

$A=19.5$

B is the right choice.

6 0

3 years ago

Use the given parent function f(x) = [x] to graph g(x) = [x]+3

Brut [27]

Answer:

Shift the graph up 3 units.

8 0

3 years ago

a school had 690 students sign up for the trivia teams if they wanted to have nine teams with the same number of students on eac

Anna11 [10]

Answer:

30 more students

Step-by-step explanation:

690 + 30 = 720

720 / 9 = 80

8 0

3 years ago

HELPPP ASAPP PLEASEE

Archy [21]

Answer:

1 tube of paint = $6

Step-by-step explanation:

check the graph to verify the answer

5 0

3 years ago

Read 2 more answers

*pls help* solve 7,8,9, and 10 for brainliest

pls help solve 7,8,9, and 10 for brainliest