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ZanzabumX [31]
3 years ago
8

A fourth grade class at a local elementary answered 1,209 multiplication fact problems last month. If there were a total of 4 cl

asses, how many multiplication facts did the 4 classes answer?
Mathematics
1 answer:
julsineya [31]3 years ago
3 0
About 302 for each class
You might be interested in
Which point is 8 units away from ( 7, 5 ) ?
Ivan

Answer:

C ( 7, -3 )

Step-by-step explanation:

Question:

which point is 8 units away from ( 7, 5 ) ?

Choices:

A : (0,-3 )B (15,13) C ( 7, -3 ) D ( 1, 5 )

Solution:

(7, 5) and (7, 3) have the same x-coordinate, 7.

They are both on a vertical line that passes through point (7, 0).

(7, 5) is 5 units above the x-axis.

(7, -3) is 3 units below the x-axis.

5 + 3 = 8

(7, 5) and (7, 3) are 8 units apart.

Answer: C ( 7, -3 )

4 0
3 years ago
Howard’s uncle gave him $885 for his tenth birthday. The money was invested in a savings account with interest compounded at 12%
Stella [2.4K]
Principal Amount = P = $885
Amount Accumulated = A = $3500
Interest rate = r = 12% = 0.12
Compounding period in a year = n = 2
Time in years = t = ?

The formula for compounding is:

A=P(1+ \frac{r}{n})^{t*n}

Using the values, we get:

3500=885(1+ \frac{0.12}{2})^{2*t} \\  \\ 
 \frac{3500}{885} =(1.06)^{2t} \\  \\ 
log(\frac{3500}{885})=log((1.06)^{2t}) \\  \\ 
log(\frac{3500}{885})=2tlog(1.06) \\  \\ 
t= \frac{log(\frac{3500}{885})}{2log(1.06)}  \\  \\  \\ 
t=11.80

This means, it will take him 11.8 or approximately 12 years 
6 0
3 years ago
in 5 min, Peter completed 2 math problems. Yvonne says he did 3/5 of a problem each minute. is she correct? Explain.
masya89 [10]
No!
Because I don't know but I tried:
2/5= 0.4 and 3/5= 0.6, they are not equal so if Yvonne says he did 2/5 of a problem each minute, and then she will be correct!
3 0
3 years ago
Read 2 more answers
The equation 2x + 3 = 5 is modeled below
kogti [31]
<h2>Answer:</h2>

The first step will be <u>subtract</u><u> </u><u>3</u><u> </u><u>from</u><u> </u><u>each</u><u> </u><u>side</u><u> </u><u>of</u><u> </u><u>the</u><u> </u><u>model</u>.

<h3>Explanation:</h3>

By subtracting 3 from each side of the model, the 3 in the Right Hand Side will be cancelled, and the model will be:

2x = 5 - 3 = 2

Then the next step will be dividing 2 from each side of the model.

<h3>Solution:</h3>

2x + 3 = 5

By subtracting 3 to both the sides, we get

2x + 3 - 3 = 5 - 3

or, 2x = 2

By dividing 2 to both the sides, we get

2x/2 = 2/2

or, x = 1

<h2>Answer:</h2>

The value of x is 1.

5 0
3 years ago
What coordinate pair satisfies both 5x - 3y=22 and -4x + y=-19​
Arlecino [84]

Answer:

hello : coordinate pair is:  (5 ; 1)

Step-by-step explanation:

you have this system :

5x - 3y=22 ......(1)

-4x + y= -19​.....(2)

by (2) : y = 4x -19

put y in (1) : 5x - 3 (4x -19) =22

5x -12x +57 = 22

- 7x = -35

x = 5

but : y = 4x -19  so : y = 4(5) -19   = 1

coordinate pair is:  (5 ; 1)

6 0
3 years ago
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