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3 years ago

PLEASE HELP ME ASAP!! I had trouble with this and it is now over due

Mathematics

1 answer:

erica [24]3 years ago

3 0

Answer:

Shira: x = 8

Samuel: m = 0

Step-by-step explanation:

Shira's mistake was that she subtracted 2 from both sides instead of adding to on both sides.

Correct Solving:

2x - 2 = 14

Add 2 to both sides;

2x = 16

Divide both sides by 2;

x = 8

Samuel's mistake was that when he distributed -2 to 8m and 8 he put the wrong sign for -2 * 8.

Correct Solving:

-2(8m + 8) = -16

Distribute;

-16m - 16 = -16

Add 16 to both sides;

-16m = 0

Divide both sides by -16;

m = 0

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prisoha [69]

Answer:

A. 50°

Step-by-step explanation:

The external angle ACB created by tangents CA and CB is the supplement of arc AB it intercepts.

∠ACB = 180° -AB

∠ACB = 180° -130°

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2 years ago

How many liters are in 21 cups? if 1L=4.2cups<br> i don't understand how to do it

Luda [366]

Answer:

5 L

Step-by-step explanation:

As given in question,

1 L can fill 4.2 cups.

So, 1 cup can hold $\frac{1}{4.2}$ L of fluid.

Therefore,

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So, there is 5 L of fluid in 21 cups.

3 0

3 years ago

Read 2 more answers

Need the answer:) :)

user100 [1]

1/y^3 is your answer

4 0

3 years ago

Can someone answer this soon?!?

Sever21 [200]

First get all the terms on the same side:

$x^2 + 7x - 4 = 0$

Now solve using the quadratic formula which is:

$\frac{-b±\sqrt{b^2 - 4ac} }{2a}$

Plug in the values:

$\frac{-7± \sqrt{49-4(1)(-4)} }{2}$

So the answer is:

$\frac{-7 ± \sqrt{65} }{2}$

6 0

3 years ago

Match each term with the part of the expression 9m4−12m−6−12 it best describes. All terms will be used ONLY once.

RideAnS [48]

Answer:

see below...

Step-by-step explanation:

-12=constant [# doesn't change]

4=degree [exponent]

-6m= term [variable or 3]

9=coefficient [first #]

4 0

2 years ago