MATHEMATICS HIGH SCHOOL

Only need help with 8,9,10 please Need the answers Fast don’t understand

Answers

Answer 1

Answer:

Answer: For number 8, x=6. For number 9, x=7. For number 10, x=15

Step-by-step explanation:

#8:

Angle 16x-6 corresponds to the 90 degree angle. Therefore, they are equal.

16x-6=90

Add six: 16x=96

Divide by 16: x=6

Angle 12x-4 and angle 10x+10 correspond. Therefore, they are equal.

12x-4=10x+10

Subtract 10x: 2x-4=10

Add four: 2x=14

Divide by 2: x=7

#10

Angles 7x and 5x+30 are alternate exterior angles. Therefore, they are equal.

7x=5x+30

Subtract 5x: 2x=30

Divide by 2: x=15

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Pls help with these questions, u don’t have to do both but it will help if u do :D thankss (will give brainliest)

A rectangle has a width of 10 centimeters. The rectangle's length is 4 times its width. What is the perimeter of the rectangle?

Answers

Answer:

100 cm.

Step-by-step explanation:

We have been given that a rectangle has a width of 10 centimeters. The rectangle's length is 4 times its width.

The length of rectangle would be $4* 10\text{ cm}=40\text{ cm}$ .

We know that perimeter of rectangle is 2 times the sum of length and width of rectangle.

$\text{Perimeter of rectangle}=2(\text{Length+Width)}$

$\text{Perimeter of rectangle}=2(\text{10 cm+ 40 cm)}$

$\text{Perimeter of rectangle}=2(\text{50 cm)}$

$\text{Perimeter of rectangle}=100\text{ cm}$

Therefore, the perimeter of our given rectangle would be 100 cm.

If it's width is 10cm then it's legth has to be 40cm. So 10+10+40+40=100cm Perimeter

Given a polynomial f(x), if (x - 2) is a factor, what else must be true?f(2) = 0

f(-2) = 0

f(0) = 2

f(0) = -2

Answers

If a number is a root of a polynomial, then we substitute the number to x of the polynomial, the answer or y is equal to zero. Hence, in this situation, if (x - 2) is a factor, the root is equal to 2. This means then that upon substituting 2 to the function, y is equal to zero. Answer then is A. f(2) = 0

(PLEASE ANSWER + BRAINLIEST ANSWER!!)The sector of a circle shown to the left has its center at point O. The arc XYZ has length 10.8, and the central angle XOZ has measure 1.8 radians. What is the radius length, r, of the sector?

A. √12

B. 6

C. 50/3

D. 19.44

Answers

The arc length, radius and the included angle are related as

$r\theta=\widehat {XYZ}$ where $\theta$ is in radians.

The radius $r$ is given by

Correct choice is (B).

B is the answer hope this helps and please mark me as brainliest

Which expressions have a value of 18? Choose all answers that are correct. A. –3 – 21 B. 7 – (–25) C. 34 – 16 D. –4 – (–22)

Answers

A) -3 - 21 = $-24$
B) 7 - (-25) = $32$
C) 34 - 16 = 18
D) -4 - (-22) = 18

Answer: C and D

C. 34 - 16 = 18
and
D. -4 - (-22)
-4 + 22 = 18

On august 1st, a plant was 79 centimeters tall. in june of that year it grew 12 centimeters, then 9 more centimeters in july. how many centimeters tall was it on june 1st?a.67
b.70
c.100
d.5

Answers

Answer: d. 58

The height of the plant in June 1st is 58 centimeters.

Step-by-step explanation:

Given : On August 1st, a plant was 79 centimeters tall.

In June of that year it grew 12 centimeters, then 9 more centimeters in July.

Order of Month = June → July → August

Then , the height of the plant on June 1st would be

Height in August 1st - Height grew in June - height grew in July

= 79-12-9 centimeters

= 67-9 centimeters

= 58 centimeters

Therefore , the height of the plant in June 1st = 58 centimeters

Hence, the correct answer is d. 58

What is the diagonal of a rectangle with length 48 inches and width 40 inches?

Answers

Use the Pythagorean Theorem: $a^2 + b^2 = c^2$
You can do this because when you cut the rectangle in half with the diagonal, it forms a right triangle, making the diagonal the hypotenuse (c).

$40^2 + 48^2 = c^2$

$1600 + 2304 = c^2$

$3904 = c^2$

$√(3904) = √(c^2)$

$62.48 = c$

Diagonal: 62.48 inches

i think its D=w2+l2=402+482≈ 62.482in

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At a carnival, food tickets cost $2 each and ride tickets cost $3 each. A total of $1,240 was collected at the carnival. The number of food tickets sold was 10 less than twice the number of ride tickets sold.The system of equations represents x, the number of food tickets sold, and y, the number of ride tickets sold. 2x + 3y = 1240 x = 2y – 10 How many of each type of ticket were sold? 180 food tickets and 293 ride tickets 180 food tickets and 350 ride tickets 293 food tickets and 180 ride tickets 350 food tickets and 180 ride tickets

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