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2 years ago

If 12 +22+ 32 +

Mathematics

1 answer:

kakasveta [241]2 years ago

8 0

Answer:

Step-by-step explanation:

the 2nd equation is double the first one and the first one is 1

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What is is the slope of the line shown below A)-5/8 B)8/5 C)-8/5 D)5/8

Ainat [17]

D 5/8 i believe
because 5 up and 8 down seems right

6 0

3 years ago

Jamal works as an electrician's apprentice. He rewired 4 electrical outlets in 1 and one-halfhours. If he works at the same pace

iragen [17]

Answer:

We conclude that Jamal will rewired 20 electrical outlets for 7.5 hours.

Step-by-step explanation:

We know that Jamal rewired 4 electrical outlets in 1 and one-half hours. We calculate how many electrical outlets will he rewired for 7.5 hours.

We have the following proportion:

$4:1.5=x:7.5\\\\1.5x=4\cdot 7.5\\\\1.5x=30\\\\x=\frac{30}{1.5}\\\\x=20$

We conclude that Jamal will rewired 20 electrical outlets for 7.5 hours.

3 0

3 years ago

Read 2 more answers

A bucket contains 3 small red blocks, 5 small yellow blocks, 5 large yellow and 7 large red blocks. If a block is drawn randomly

mamaluj [8]

Answer:

probability = favorable cases / true cases

p(A)=5/20 simplified by 5 = 1/4

answer : the probability that the block is one of the large yellow it's 1/4.

7 0

3 years ago

Trevor has two fraction models, each divided into equal-sized sections. The

erma4kov [3.2K]

Answer:

I will answer in a general way because the options are not given.

We know that the area of model A is smaller than the area of model B.

For model A, we have 72 shaded sections, out of 100.

Then the quotient of model A is:

72/100 = 0.72

For model B we have 10 sections, and x shaded ones.

Because model B is greater than model A, we know that:

x/10 should be larger than 72/100

then we have the inequality:

x/10 > 0.72

x > 0.72*10

x > 7.2

And we can not have more than 10 shaded sections (because there is a total of 10 sections) then:

10 ≥ x > 7.2

Then x can be any whole number in that interval.

the possible values of x are:

x = 8

x = 9

x = 10

5 0

3 years ago

Please help me thanks!!

ValentinkaMS [17]

Answer:

Step-by-step explanation:

Question One

Multiply through by 2

2*1/2 * (2x + y ) = 21/2 * 2

Combine

2x + y = 21

Subtract 2x from both sides

y = 21 - 2x

Now equate the two given equations

y = 21 - 2x

y = 2x

Add 2x to both sides

2x = 21 - 2x

2x + 2x = 21

4x = 21

x = 21/4

x = 5 1/4

x = 5.25

Question 2

$\dfrac{2x + 6}{(x + 2)^2} - \dfrac{2}{(x + 2)}$

multiply numerator and denominator of the second fraction by (x + 2)

$\dfrac{2x + 6}{(x + 2)^2} - \dfrac{2(x + 2)}{(x + 2)*(x + 2)}$

Remove the numerator brackets in the right hand fraction. Look out for the minus sign.

$\dfrac{2x + 6}{(x + 2)^2} - \dfrac{2(x + 2)}{(x + 2)^2}\\\\\dfrac{2x + 6- 2x - 4}{(x + 2)^2}}\\\\\dfrac{2}{(x + 2)^2}$

6 0

4 years ago

Read 2 more answers