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3 years ago

Help me plz plzz i’m confused

Mathematics

1 answer:

Lisa [10]3 years ago

8 0

Step-by-step explanation:

you are trying to divide x by 7 to isolate x. so you divide by 8 on both sides.

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At Southside Middle School, 20% of the students play an instrument. There are 305 students. How many students play an instrument

Sholpan [36]

Answer:

6.557377049 but if simplified put either 6.5 or 6.6

Step-by-step explanation:

20 divided by 305 is 0.065. 0.065 times 100 is 6.5 or 6.6. Hope you pass.

6 0

3 years ago

Find the coefficient of mt in the expansion of 4m(3n-2t)+3t(3t-2m)

Drupady [299]

Answer:

-14

Step-by-step explanation:

12mn-8mt+9t²-6mt

12mn+9t²-14mt

the coefficient of mt is -14

4 0

3 years ago

Can anyone help with this???

VikaD [51]

Answer:

56.25

Step-by-step explanation:

The number you need to add to both sides to complete the square needs to be calculated by doing ( $\frac{b}{2}$ )². So, in this problem, b= -15.

-15/2 = -7.5, and -7.5² = 56.25. This is the number you will add to complete the square

6 0

4 years ago

3i (2i-4)<br><br> Show steps and answer

Sloan [31]

Answer:

6i^2-12i

Step-by-step explanation:

3i×2i =6i^2

3i×4 =12i

5 0

1 year ago

In 1955 an antique car that originally cost 3,943 is valued at 64,125 if in excellent condition, winch is 2 1/4 times as much as

nika2105 [10]

Answer:

The value of the car in very nice condition is $28,500.

Step-by-step explanation:

Consider the provided information.

In 1955 an antique car that originally cost 3,943 is valued at 64,125 if in excellent condition, winch is 2 1/4 times as much as a car in very nice condition.

The mixed fraction can be written as:

$2 \frac{1}{4}=\frac{9}{4}$

Let x is the value of car in very nice condition.

$64,125 =\frac{9}{4}x$

$x=\frac{64,125\times 4}{9}$

$x=28,500$

Hence, the value of the car in very nice condition is $28,500.

7 0

3 years ago