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kolbaska11 [484]
3 years ago
5

Calculate the area and perimeter

Mathematics
1 answer:
siniylev [52]3 years ago
4 0

Answer:

Area: 38 cm^2 Perimeter: 28 cm

Step-by-step explanation:

blegh

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Solve for f(-7) plz thanks
Natasha2012 [34]

Answer:

12

Step-by-step explanation:

If f(x) = 5 - x

Then f(-7) = 5 - (-7)

f(-7) = 5 + 7

f(-7) = 12

7 0
3 years ago
In the following figure it is given that 2a-5b=10 find a and b
RoseWind [281]

Answer:a=130,b=50

Step-by-step explanation:

a+b= 180

2a-5b=10

2(180-b)-5b=10 (I have substituted (180-b) for a here.)

360-2b-5b=10

350=7b

b=50

a+50=180

a=130

7 0
3 years ago
Can some explain how to do this.
KatRina [158]

We can simplify the expression by using exponent properties, and we will see that the correct option is the fourth option.

<h3>How to simplify the expression?</h3>

Remember the exponent property:

\frac{a^n}{a^m} = a^{n - m}

Here we have the expression:

\frac{83.9*10^{12}*2.87*10^{-3}}{3.76*10^2}

We can reorder this to get:

\frac{83.9*10^{12}*2.87*10^{-3}}{3.76*10^2} = \frac{83.9*2.87}{3.76}*\frac{10^{12}*10^{-3}}{10^2}

The right side can be simplified to:

\frac{83.9*2.87}{3.76}*\frac{10^{12}*10^{-3}}{10^2} = 64.04*10{12 - 3 - 2} = 64.04*10^{7}

Now, we can move the decimal point one time to the left and increase the exponent by one, so we get:

6.404*10^8

Then we conclude that the correct option is the last one (where I rounded the expression to only 3 values after the decimal point).

If you want to learn more about scientific notation:

brainly.com/question/5756316

#SPJ1

3 0
2 years ago
50 points and brainly
Andre45 [30]

Answer:

Part A:

c = .86*p

c =1.72 for 2 lbs

Part B:

c =.81p

Step-by-step explanation:

Part A:

Total cost = cost per pound * number of pounds

c = .86*p

Let p = 2

c = .86*2

c =1.72

Part B:

Total cost = cost per pound * number of pounds

c = .(.86-.05)*p

c =.81p

5 0
3 years ago
Ireland has a 23% VAT (value-added tax, similar to a sales tax). How much will the VAT be on a purchase of a €250 item?
snow_tiger [21]

Answer:

idk

Step-by-step explanation:

i still dont know

6 0
3 years ago
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