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3 years ago

URGENT

Mathematics

1 answer:

harina [27]3 years ago

3 0

<span>Just list all elements that belong both to A and to B
A ∩ B = {6,12}</span>

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4x2 + 8x - 7 - (3x2 - X+9)

Andreas93 [3]

Answer:

Step-by-step explanation:

$4 {x}^{2} + 8x - 7 - (3 {x}^{2} - x + 9)$

When there is a (-) in front of an expression in parentheses, change the sign of each term in the expression:

$4 {x}^{2} + 8x - 7 - 3 {x}^{2} + x - 9$

Collect like terms

$4 {x}^{2} - 3 {x}^{2} + 8x + x - 7 - 9$

${x}^{2} + 9x - 7 - 9$

Calculate

${x}^{2} + 9x - 16$

Hope this helps...

Good luck on your assignment...

5 0

2 years ago

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Mike has 3 1/2 ounces of sugar to put in his coffee. If he actually only puts in 1 5/9 ounces of sugar, about how much sugar doe

elena55 [62]

Answer:

I think it might be 1 17/18

(not sure)

Step-by-step explanation:

what I did was break down 3 1/2 and I got 2 3/2 I then Subtracted that by 1 5/9 (I don't know if it's right sorry if I'm wrong)

3 0

3 years ago

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The ratio of boys to girls in a school is 9:11. If there are 400 pupils in the school,how many boys are there

Anvisha [2.4K]

I believe its 180.

I have seen this question before and the amount of girls was 220, so 400-220 is 180

Hope this helps :)

5 0

2 years ago

Subtract the following polynomials

Olegator [25]

Answer:

1. (q² + 8) - (4q² + 1)

Simplify each term.

q²+8−4q²−1

Simplify by adding terms.

−3q²+7

2. (3x + 7x² - 6) - (5x² + x + 9)

Simplify each term.

3x+7x²−6−5x²−x−9

Simplify by adding terms.

Tap for more steps...

2x²+2x−15

Step-by-step explanation:

4 0

2 years ago

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What is 6/4 simplified

Rashid [163]

Since this is an improper fraction, you simplify it into a mixed number.
4 goes into 6 1 time. 2 left left over, resulting in 1 2/4. Simplify that into
1 1/2

6 0

3 years ago

Read 2 more answers