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AleksandrR [38]
3 years ago
9

The number of students at Marita’s school decreased to 90% of last year’s number. Last year, there were 1,500 students. How many

students are there this year?
Mathematics
1 answer:
DerKrebs [107]3 years ago
3 0

Answer:

1,350

Step-by-step explanation:

To solve this problem, we need to figure out what 90% of 1,500 is. We will need to multiply 1,500 by 90% to get our answer. Don't forget that we will also need to switch 90% to its decimal form (90% - > 0.9).

1,500 x 0.9 = 1,350

This means that there are 1,350 students at Marita's school.

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a small bridge sit atop for cube shaped powers that all have the same volume. The combined volume of the four pillars is 503 how
Natasha_Volkova [10]

Answer:

60 inches long are the sides of the pillars.

Step-by-step explanation:

Given : A small bridge sits atop four cube shaped pillars that all have the same volume. the combined volume of the four pillars is 500 ft cubed.

To find : How many inches long are the sides of the pillars?

Solution :

Refer the attached picture below for Clarence of question.

The volume of the cube is V=a^3

Where, a is the side.

The combined volume of the four pillars is 500 ft cubed.

The volume of each cube is given by,

V=\frac{500}{4}=125\ ft^3

Substitute in the formula to get the side,

125=a^3

a=\sqrt[3]{125}

a=5\ ft

We know, 1 feet = 12 inches

So, 5 feet =5\times 12=60 inches

Therefore, 60 inches long are the sides of the pillars.

6 0
3 years ago
If f(x)=x+7 and g(x)=2x-3 what is (f-g)(x)
aalyn [17]

Answer:

-x + 10

Step-by-step explanation:

(x + 7) - (2x-3)

x + 7 - 2x - 3

x - 2x

-x + 7 + 3

-x + 10

4 0
2 years ago
Which number line represents the solution set for the end equality 3x < -9
shepuryov [24]

divide both sides by 3

so, you'll get x<-3

that's your solution

4 0
3 years ago
Kyle crawled 49.8 feet in 6 minutes, how far did he crawl every minute…
Blizzard [7]

Answer:

assuming that kyle crawled at the same pace for six minute then it would be 8.3 feet each minute

Step-by-step explanation:

8 0
3 years ago
Without using a calculator determine the number of real zeros of the function f(x) = x^3 + 4x^2 + x -6
hodyreva [135]
Try this:
x³+4x²+x-6=0
1) To re-write the equation into form:
1*x³+4*x²+1*x-6=0, the note 1+4+1=6, it means x=1
2) to re-write the equation into form:
(x-1)(x²+5x+6)=0
(x-1)(x+2)(x+3)=0
3)
\left[\begin{array}{ccc}x-1=0\\x+2=0\\x+3=0\end{array}\right \ \ \textless \ =\ \textgreater \   \left[\begin{array}{ccc}x=1\\x=-2\\x=-3\end{array}\right
Answer: -3;-2;1.
8 0
3 years ago
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