2 years ago

Help me doing this questions..

Mathematics

1 answer:

Ainat [17]2 years ago

5 0

Answer:

{a} {b} {c} {ab} {ac} {bc} {abc}

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I need your help! Which one's are correct?!

dlinn [17]

Answer:

The first one and the last one

mark brainliest pls

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2 years ago

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Line A passes through the points (1, -1) and (-2, 8).

Viefleur [7K]

The answer to this question will be D

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3 years ago

( 7x + 1/2) + ( 7x - 7 and 1/2) Simplify

pishuonlain [190]

Answer:

The answer will be 7(2x - 1)

Step-by-step explanation:

1) Convert 7 and 1/2 to improper fraction. Use this rule: a b/c = ac + b/c

$7x + \frac{1}{2} + 7x - \frac{7 \times 2 + 1}{2}$

2) Simplify 7 × 2 to 14 .

$7x + \frac{1}{2} + 7x - \frac{14 + 1}{2}$

3) Simplify 14 + 1 to 15.

$7x + \frac{1}{2} + 7x - \frac{15}{2}$

4) Collect like terms.

$(7x + 7x) + ( \frac{1}{2} - \frac{15}{2} )$

5) simplify.

$14x - 7$

6) Factor out the common term 7.

$7(2x - 1)$

Therefor, the answer is 7( 2x - 1 ).

7 0

2 years ago

How many nickels and dimes are in $5.20 if there are six times more nickels than dimes?

Zina [86]

N=6*d
0.05*n + 0.10*d = 5.20
0.3d+0.1d =5.20
d = 5.20/0.4 = 13
13 dimes and 78 nickels

5 0

3 years ago

Need someone to help me with my math work

ziro4ka [17]

Answer:

The small triangle has a long leg of 8. The triangle area formula is used to derive this. Now, there can be a ration equation.

10/4 = x/8

x = 20

Now use the formula.

A=1/2bh

A=1/2(10*20)

A=100

Area of DEF is 100 m^2.

6 0

3 years ago

Help me doing this questions..​

Help me doing this questions..