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4 years ago

15

Jackson was making a poster for his room. He arranged 50 trading cards in the shape of a rectangle on the poster. How many rows

of cards were on his poster?
a) 3
B) 5
c) 6
d) 9

2 answers:

ankoles [38]4 years ago

8 0

The answer is b because 5 is the only number divisible by 50.

julsineya [31]4 years ago

4 0

Pretty sure it's B because 50 isn't divisible by any of the other choices

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50% of a certain number is 39. What is the number?

Allushta [10]

Let that certain number be 'n'

50% (n) = 39

50% ⇒ 0.5

0.5 (n) = 39

Divide both sides by 0.5

0.5n = 39
/0.5 /0.5

n = 78.

So that certain number is actually <em><u>78! :)</u></em>

CROSS CHECK:

50% of 78

0.5 × 78

= 39

Hope this helps! :)

8 0

3 years ago

The ratio of girls to boys in Jaime's chorus is 2 to 4. If there are 25 girls in her chorus, how many boys are there? *

Pavlova-9 [17]

Answer:

50 boys

Step-by-step explanation:

2/4 = 1/2

25*2=50

8 0

3 years ago

If (x + 2 ) is a factor of x3 − 6x2 + kx + 10, k =

BartSMP [9]

If a binomial x-a is a factor of a polynomial p(x), then p(a)=0.

x+2 is a factor of p(x)=x³-6x²+kx+10, so p(-2)=0.

$p(-2)=0 \\
(-2)^3 - 6 \times (-2)^2 + k \times (-2) + 10=0 \\
-8-6 \times 4-2k+10=0 \\
-8-24-2k+10=0 \\
-2k-22=0 \\
-2k=22 \\
k=\frac{22}{-2} \\
\boxed{k=-11}$

8 0

3 years ago

Read 2 more answers

Is (2, 3) a solution to this system of equations?<br> y :<br> = x + 2<br> -1<br> y = -x + 4<br> 2

MakcuM [25]

Step-by-step explanation:

so blue and pink = purple Yellow and red = orange

8 0

3 years ago

A principal of $2000 is invested at 7.75% interest, compounded annually. How much will the investment be worth after 14 years?

krek1111 [17]

Answer:

Yearly compounding: 7.75% $5,686.85

Quarterly compounding: 7.978% $5,857.78

Monthly compounding: 8.031% $5,898.27

Daily compounding: 8.057% $5,918.20

Step-by-step explanation:

multiply yearly by 14

7 0

2 years ago