MATHEMATICS HIGH SCHOOL

If you know help me please I’m stuck!

Answers

Answer 1

Answer:

Answer:

82.4

Step-by-step explanation:

divide 51/13, multiply that result by 21.

Related Questions

Ten less than double a number is the same as seven times the number. Find the number
X^2−1.78x, if x=2.78
What is the ratio of 4m to 8m? Please explain how you get this.
Rewrite this expression using the distributive property then simplify.2/3(6x+12)
What is a correct first step in solving the inequality –4(3 – 5x)≥ –6x + 9?

10 POINTS AND BRAINLIEST! Calculate the area of the trapezoid, which is not drawn to scale.

Answers

Answer:

A = (5+4) divided by 1/2 x 11 (h) = 49.5 in

Answer:38 inches

Step-by-step explanation:A=1/2 (base 1 + base 2) x height = area

Base 1 = 11 in

Base 2 = 8 in

Height = 4 inches

Area if trapezoid = 1/2 x 11 + 8 x 4 =!19 sum of bases

19x4(H) = 76

76/2=38 inches

Area of trapezoid = 38 inches

Which shows one way to determine the factors of x3 – 9x2 + 5x – 45 by grouping?x2(x – 9) – 5(x – 9)
x2(x + 9) – 5(x + 9)
x(x2 + 5) – 9(x2 + 5)
x(x2 – 5) – 9(x2 – 5)

Answers

x³ - 9x² + 5x - 45

x²(x - 9) - 5(x - 9) ⇒ x³ - 9x² - 5x + 45 INCORRECT
x²(x + 9) - 5(x + 9) ⇒ x³ + 9x² - 5x - 45 INCORRECT

x(x² + 5) - 9(x² + 5) ⇒ x³ + 5x - 9x² - 45 CORRECT
It just needs to be rearranged.

x(x² - 5) - 9(x² - 5) ⇒ x³ - 5x - 9x² + 45 INCORRECT

The answer choice which shows a way to determine the factors by grouping is; x(x² + 5)–9(x² + 5).

Which shows one way to determine the factors of x3 – 9x2 + 5x – 45 by grouping?

According to the task content, the factors of the expression are to be determined by grouping.

On this note, one way to group the factors would be;

x³ + 5x - 9x² -45

Upon factorisation;

x(x² + 5) – 9(x² + 5).

Read more on factorisation by grouping;

brainly.com/question/12675337

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How do you solve 2x^2-32=0 using square roots?

Please help!

Answers

$2x^2-32=0 \ \ / :2 \n \n x^2-16=0 \n \nx^2-4^2 = 0 \n \n (x-4)(x+4)=0 \n \n x-4 = 0 \ \ or \ \ x+4 = 0\n \n x=4\ \ or \ \ x=-4$

$2x^2-32=0\n\n2(x^2-16)=0\ /:x^2-16=0\n\nx^2-4^2=0\n\n(x-4)(x+4)=0\n\nx-4=0\ \ \ \ or\ \ \ \ \ x+4=0\n\nx=4\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x=-4$

Let n = 5. What is the value of 4n − 3?

A.

8

B.
17

C.
20

D.
23

Answers

4 times 5 is 20 then take away 3 which is 17. So the answer is B

4*5-3=20-3=17 ⇒ B
...............

The leather of marshalls rectangular poster is 2 times its width. if the perimeter is 24 inches, what is the area of the poster

Answers

Well, the perimeter is the rim of the rectangle and you can use the rim to find the area... but, First you have to find the length and the width
if the width is two times the height when you flip that you get that the height is half of the width
So first you find that half of 24 is 12... this is our width
Now, what is half of 12... 6, this is our height
simple math tells us that to find the area you multiply that height and the width
6 * 12 = 72
so the area of the poster is 72 inches

The sum of two numbers is 58.the smaller number is 12 less than the larger number.what are the numbers?