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Tju [1.3M]
3 years ago
5

Write the sum as a product. simplify the product (-2)+(-2)+(-2)

Mathematics
2 answers:
Andreas93 [3]3 years ago
8 0
<em>(-2)+(-2)+(-2)=>-2*3=-6

</em>
LuckyWell [14K]3 years ago
4 0
-2x3= -6. Adding a negative number is just like subtracting it :)
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Solve these equations.<br> |x-7|=x-7
Cloud [144]

Answer:

x ≥ 7

Step-by-step explanation:

|x - 7| = x - 7

A. For each absolute, find the intervals

x - 7 ≥ 0     x - 7 < 0

     x ≥ 7           x < 7

If x ≥ 7, |x - 7| = x - 7 > 0.

If x < 7, |x - 7| = x - 7 < 0. No solution.

B. Solve for x < 7

Rewrite |x - 7| = x - 7 as

+(x - 7) = x - 7

      x - 7 = x - 7

-x + 14 = x

        14 = 2x

          x = 7

7 ≮7. No solution

C. Solve for x ≥ 7

Rewrite |x - 7| = x - 7 as

+(x - 7) = x - 7

      x - 7 = x - 7

True for all x.

D. Merge overlapping intervals

No solution or x ≥ 7

⇒ x ≥ 7

The diagram below shows that the graphs of y = |x - 7| (blue) and of y = x - 7 (dashed red) coincide only when x ≥ 7.

6 0
2 years ago
8{(5*3)+(2*5)+(2*10)=
DerKrebs [107]

Answer:

8(5*3)+(2*5)+(2*10)=360

Step-by-step explanation:

8(15)+(10)+(20)=

8(45)=

6 0
2 years ago
Read 2 more answers
Cal
saw5 [17]

\text{Find how much Zelda paid for the visit to the ER:}\\\\\text{We know that her insurance pay's 85\% of the emergency room cost,}\\\text{ so multiply 0.85 from 4089 and subtract}\\\\4089*0.85=3,475.65\\\\4089-3,475.65=613.35\\\\\text{She pays \$613.35 of the emergency room cost}\\\\\text{We're not done yet, we also know she pays a \$100 deductible,}\\\\\text{So add 100 to 613.35}\\\\613.35+100 = 713.35\\\\\boxed{\text{She pays \$713.35}}

8 0
3 years ago
Factor using the identity: a3 + b3 = (a + b)(a2 – ab + b2) 8z3 + 27
vivado [14]

Answer:  this is our required factor i.e.

8z^3+27=(2z+3)(4z^2-6z+9)

Explanation:

Since we have given that

8z^3+27

As we know the identity , which says that

a^3+b^3=(a+b)(a^2-ab+b^2)

So, we can use this here ,

8z^3+27=(2z)^3+3^3\\\\=(2z+3)((2z)^2-2z\times 3+3^2)\\\\=(2z+3)(4z^2-6z+9)

Hence this is our required factor i.e.

8z^3+27=(2z+3)(4z^2-6z+9)


7 0
3 years ago
Read 2 more answers
Saira is using the formula for the area of a circle to determine the value of .
klio [65]

For this problem, we just have to use the values we're given to calculate the approximate value of pi.

The formula presented is

\pi=Ar^{-2}

When you have a negative exponent, we can use the following property

a^{-b}=\frac{1}{a^b}

Using this property, our problem turns out to be

\pi=\frac{A}{r^2}

Now, we just need to plug the given values on this equation

\pi=\frac{50.265}{4^2}=3.1415625\approx3.142

The approximated value for pi is 3.142.

5 0
1 year ago
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