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Y_Kistochka [10]
3 years ago
14

Simplify the expression 7h+​(−6.9d​)−14+5d−2.9h

Mathematics
1 answer:
loris [4]3 years ago
6 0

Answer:

-1.9d + 4.1h - 14

Step-by-step explanation:

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I don’t understand can someone please explain how to work this out and what the answer is
joja [24]

When you see an equation with parenthesis around it, you can use this:

Parenthesis

Exponents

Multiplication

Division

Addition

Subtraction

Otherwise known as PEMDAS.

We can see that in the equation, there are parenthesis, so we can open those. We open parenthesis by taking the number right next to the parenthesis (or outside the parenthesis) and we multiply that number by everything inside. So this is what it would look like:

-2x^2 - 10x + 8

See how the signs changed? This rule only applies when you multiply something, but here is how I think of it:

+ and + always equals +.

- and - always equals +.

- and + always equals -.

+ and - always equals -.

So that's it! Just to be clear, the answer is:

-2x^2 - 10x + 8

Hope I helped, sorry if I'm wrong!

`Mschmindy

4 0
3 years ago
What is the image of F for a dilation with center (0, 0) and a scale factor of 10?
kogti [31]
F = (-3,3)
scale factor of 10

-3 * 10 = -30
3 * 10 = 30

answer : (-30,30)
6 0
3 years ago
Read 2 more answers
Use the formula to find
Marizza181 [45]

Answer:

5525

Step-by-step explanation:

Using the formula with n = 25 , then

\frac{25(26)(50+1)}{6}

= \frac{25(26)(51)}{6}

= \frac{33150}{6}

= 5525

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2 years ago
Find the area if each circle. use 3.14 for x and round your answer to the nearest tenth.
Ket [755]
5. area = 452.4
6. area = 56.8
3 0
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PLS HELP ME PLS I WILL GIVE BRIANLIEST
yawa3891 [41]

Answer: BC/BF & M<C

Step-by-step explanation:

5 0
3 years ago
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