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3 years ago

What is the product of -12(-5)? A -60 C 48 B -48 'D 60

Mathematics

2 answers:

Andreas93 [3]3 years ago

8 0

Answer: 60

Process-
A negative times a negative equals a positive
12×5 = 60 therefore the answer is 60

prisoha [69]3 years ago

7 0

Answer:

It’s a

Step-by-step explanation:

Am smart

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The sum of two numbers is 25. one number is twice the second number plus seven. what are the two numbers

mihalych1998 [28]

Let x be the second number.
Let 2x+7 be the first number.

x+2x+7=25
3x+7=25

3x=25-7
3x=18
x=18/3
x=6
2x+7=19
The two numbers are 19 and 6.

3 0

3 years ago

Can you guy help me please

nordsb [41]

For number 25 it’s x=4 and for 26 it’s x=7

7 0

3 years ago

Please help me its really important

Serga [27]

Answer:

I think that the answer isssss B

5 0

2 years ago

Solve the system of equations –2 + y = 14 and -5x – 7y=10 by combining the

pochemuha

Answer:

Step-by-step explanation:

-2+y=14

-5x-7y=10

y=14+2

y=16

-5x-7(16)=10

-5x-112=10

+112 +112

-5x=122

x=-24.4

5 0

2 years ago

NEED HELP WITH THESE QUESTIONS

amm1812

For this case we must solve the following questions:

Question 1:

We should simplify the following expression:

$\frac {\frac {m ^ 2 * n ^ 3} {p ^ 3}} {\frac {mp} {n ^ 2}} =$

Applying double C we have:

$\frac {m ^ 2 * n ^ 3 * n ^ 2} {mp * p ^ 3} =$

By definition of multiplication of powers of the same base we have to place the same base and add the exponents: $\frac {m ^ 2 * n ^ 5} {m * p ^ 4} =$

Canceling common terms:

$\frac {mn ^ 5} {p ^ 4}$

Answer:

Option A

Question 2:

We should simplify the following expression:

$\frac {3xyz ^ 2} {6y ^ 4} * \frac {2y} {xz ^ 4}$

So, we have:

$\frac {3xyz ^ 2 * 2y} {6y ^ 4 * xz ^ 4} =\\\frac {6xy ^ 2z ^ 2} {6y ^ 4xz ^ 4} =$

Simplifying common terms:

$\frac {1} {y ^ 2z ^ 2}$

Answer:

Option D

Question 3:

We factor the following expressions to rewrite the experience:

$r ^ 2 + 7r + 10$ : We look for two numbers that multiplied give 10 and added 7:

$(r + 5) (r + 2)$

$r ^ 2-5r-50:$ We look for two numbers that multiplied give -50 and added -5:

$(r-10) (r + 5)$

$3r-30 = 3 (r-10)$

Rewriting the given expression we have:

$\frac {(r + 5) (r + 2) * 3 (r-10)} {3 (r-10) (r + 5)} =$

We simplify common terms in the numerator and denominator we have:

$(r + 2)$

Answer:

Option D

4 0

2 years ago

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