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3 years ago

I need help rn what's the Ratio grade 8 level pls answer omg

Mathematics

1 answer:

guajiro [1.7K]3 years ago

8 0

Answer:

5x:8x

Step-by-step explanation:

X= 0.5

2.5 / 0.5 = 5

4/0.5 =8

so 5x: 8x

I hope im right!!

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Write 21/23 as a decimal rounded to the nearest tenth.

n200080 [17]

Answer:

0.9

Step-by-step explanation:

21 ÷ 23 = 0.913

Round to the nearest tenth = 0.9

Hope this helps!

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3 years ago

Find F(-3) F(X)=2x^2-5x-8

aliya0001 [1]

Answer:

;-;

Step-by-step explanation:

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3 years ago

Please help...given that elm and oak street are parallel, find m

jarptica [38.1K]

Answer:

102°

Step-by-step explanation:

(3x - 12)° + (2x + 2)° = 180°

5x - 10 = 180 ⇒ x = 38

m∠A = (3x - 12)°

m∠A = (3×38 - 12)° = 102°

6 0

3 years ago

Read 2 more answers

Write the product in standard form: (x+4)(x-4)

Genrish500 [490]

Answer:

x² - 16

Step-by-step explanation:

Use the FOIL method here where

F = first

O = outer

I = inner

L = last

F = x * x = x²

O = -4 * x = -4x

I = 4 * x = 4x

L = -4 * 4 = -16

Combine the terms to get x² - 16.

8 0

3 years ago

If tñ=2ñ+3, find S10

Allisa [31]

Answer:

$S_{10}=280$

Step-by-step explanation:

Given that,

$t_n=2n+3$ ...(1)

We need to find the value of $S_{10}$ .

Put n = 1 to find the first term.

$t_1=2(1)+3=5$

Put n = 2 to find the second term.

$t_2=2(2)+3=7$

Put n = 3 to find the third term.

$t_3=2(3)+3=9$

Put n = 10 to find the tenth term.

$t_{10}=2(10)+3=23$

It means we need to find the sum of 5,7,9,.....,23.

The formula for the sum of n terms is given by :

$S_=\dfrac{n}{2}(a+a_n)$

We have, n = 10, a = 5 and $a_n=23$

So,

$S=\dfrac{10}{2}(5+23)\\\\S_{10}=10\times 28\\\\=280$

So, the value of $S_{10}$ is equal to 280.

3 0

3 years ago