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ipn [44]
3 years ago
5

Find the value of: a) 2x when x=5 b) 4y when = -3 c) 3z when z = 1.2

Mathematics
1 answer:
ohaa [14]3 years ago
5 0

Answer:

A. 10. B. -12. C. 3.6

Step-by-step explanation:

You will do this:

a) If x=5 (what about 2x)

=2x times 5 divide by x .That makes the answer 10

b) If y=-3(what about 4y)

=4y times -3 divide by y .That makes the answer -12.

c) If z=1.2(what about 3z)

=3z times 1.2divide by z. That makes the answer 3.6.

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Find the area of the figure. Use 3.14 for π.
siniylev [52]

Answer:

Area of the figure= 51.5feet^2

Step-by-step explanation:

Area of the figure=Area of the middle rectangle+ Area the the two triangles

Area of the rectangle=Length*Width

Length= 8+3 =11 feet\\\\Width=4 feet

Area = 11*4\\\\      =44 feet^2

Area of the triangle with the height of 2 feet and base= 3 feet

Area= \frac{1}{2} *Base*Height

==\frac{1}{2} *3*2\\\\=\frac{1}{2}*6\\\\ =3 feet^2

Area of the triangle with the Height=3 feet and Base= 3 feet

Area= \frac{1}{2} *Base*Height

=\frac{1}{2}*3*3\\\\ =\frac{1}{2}*9\\\\ =4.5feet^2

Total Area of the figure=44+3+4.5=51.5 feet^2

5 0
3 years ago
Read 2 more answers
Eliza is a chef at a restaurant. she is making spaghetti sauce and put 21 tomatoes and 6 onions in the pot. what is the ratio of
seraphim [82]
These are not hard....u just have to pay very close attention to the wording. Keep in mind ratios can be written as fractions too.

ratio of tomatoes to onions = 21:6 which reduces to 7:2...because there is 21 tomatoes and 6 onions. (21/6 reduces to 7/2...ratios written as fractions)

However, if it would have asked the ratio of onions to tomatoes, it would have been 6:21....which reduces to 2:7....so pay attention to the wording on problems such as these

so ur answer is 7:2

6 0
3 years ago
Find the average of the following salaries:<br> $38,750.00, $42,500.00, $44,500.00
sertanlavr [38]
To find the average you add all three numbers together and then divide by three since you added three.
$38,750.00 + $42,500.00 + $42,500.00 = $123,750.00
$123,750.00 ÷ 3 = $41,250
So your answer is $41,250

4 0
2 years ago
Can u get the steps to solving <br> -2(4)^2+4
svp [43]
(4)^2 must be done first.

That’ll give you 16. (4x4)

16 x -2= -32

-32+4= -28
8 0
3 years ago
The cost of a ball is one fourth of the cost of a bat. Write this statement as a linear equation in two variables
stiks02 [169]

Answer:

y: cost of a ball

x: cost of a bat

y = 1/4 * x

6 0
3 years ago
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