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Inessa05 [86]
4 years ago
8

PLEASE someone help me on this I would appreciate it.

Mathematics
1 answer:
Anton [14]4 years ago
3 0
2x-y =3
multiply by 4
8x - 4y = 12
3x +4y = 10 (unchanged equation)
------------------add
11x = 22

answer is A. the first.
first equation multiplied by 4 then sum to get 11x = 22

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If one letter is chosen at random from the word refuse what is the probability that the letter chosen will be an e
mrs_skeptik [129]

Answer: 1/3

Step-by-step explanation: The probability is given by the number of times the event could happen (in this case get an "e"), over the number of all the possibilities (in this case, the six letters of the word)

Therefore, probability \frac{letter_e}{all letter}=\frac{2}{6} =\frac{1}{3}

5 0
3 years ago
What is the product of 3x(x^2+4)
Butoxors [25]
<span>3x(x^2+4)
= 3x^3 + 12x

hope it helps</span>
3 0
4 years ago
Please Help! Geometry!
OleMash [197]

Answer:

area = 22,272

Step-by-step explanation:

area = length * width

to calculate the width, we need the first segment using the pythagorean theorem

87^{2} + x^{2} = 145^{2}

7569 + x^{2}  = 21025

x^{2} = 13456

x = 116

length = 116 + 140 = 256

so

area = 87 * 256 = 22,272

4 0
3 years ago
Can someone please help me I really need help please help me thank you
Natalija [7]

Hey there! :)

Answer:

SA = 144 cm².

Step-by-step explanation:

Find the surface area by calculating the areas of each of the lateral sides and bases:

In this instance, the bases are triangles, so the formula A = 1/2(bh) will be used:

Bases:

A = 1/2(bh)

A = 1/2(4·3)

A = 1/2(12)

A = 6 cm².

There are two bases, so:

6 × 2 = 12 cm²

Find the areas of the lateral sides using A = l × w:

5 × 11 = 55 cm²

4 × 11 = 44 cm²

3 × 11 = 33 cm²

Add up all of the areas:

12 + 55 + 44 + 33 = 144 cm².

6 0
3 years ago
Read 2 more answers
Taseem’s loose change consists of dimes and quarters. When you ask her how many of each type of coin she has, she gives you the
sweet-ann [11.9K]

The statement first, and the statement second are correct because the number of dimes is 34, and the number of quarters is 66

What is a linear equation?

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

We have:

0.1x + 0.25y = 19.9 and

x + y = 100

Let x = number of dimes

y = number of quarters

After solving the above system of equations by substitution method.

\rm \dfrac{398-5y}{2}+y=100

y = 66

\rm x=\dfrac{398-5\cdot \:66}{2}

x = 34

Thus, the statement first, and the statement second are correct because the number of dimes is 34, and the number of quarters is 66

Learn more about the linear equation here:

brainly.com/question/11897796

#SPJ1

4 0
2 years ago
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