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frozen [14]
2 years ago
12

If x is 4, what is: x + 5 3x:

Mathematics
1 answer:
kirill [66]2 years ago
5 0

Answer:

1) x+5

(4)+5 =

9

2) 3x

3(4)

12

Step-by-step explanation:

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Find the value of y.
Lerok [7]

Answer:

y=4

Step-by-step explanation:

<h3>The triangle is divided further into 2 right triangles. So ignore the left one.</h3><h3>We know the angle of elevation is 30° and the hypotenuse is 8.</h3><h3>Looking at SOH CAH TOA we use the sine ratio in trigonometry because we have to find the side opposite to the angle given and we know the hypotenuse. </h3><h3>It is: sin 30 = y/8</h3><h3>y= 8 sin 30</h3><h3>y=4</h3>
8 0
2 years ago
Estimate the perimeter of the figure<br> The perimeter is about ____ units.
storchak [24]

Answer:

18

Step-by-step explanation:

Do it by count how many side are there by the squares

8 0
2 years ago
mary ann spent $26.85 total on two new toys. She had a coupon for 1.00 off her total purchase and spend 1.75 on sales tax. Each
GalinKa [24]

Answer: $13.80

Step-by-step explanation:

Mary ann spent $26.85 total on two new toys but had a coupon for $1.00 off her total purchase. Therefore, we subtract $1.00 from $26.85. This will be:

= $26.85 - $1.00

= $25.85

Shw then spend $1.75 on sales tax. Total coat will now be:

= $25.85 + $1.75

= $27.60

Since each toy coat same amount, therefore each toy will cost:

= $27.60 / 2

= $13.80

3 0
2 years ago
What is 56 ÷ 7 + 3y3 when y = 4?
lesya692 [45]

Answer:

44

Step-by-step explanation:

look at the screenshot below, it should help

6 0
2 years ago
Read 2 more answers
A stadium has central rectangular area 125m long by 80 m wide there are two semicircular ends.running tracks goes all way round
olga_2 [115]

) Using formula for cicumference.

Circumference = Pi * diameter

Circumference = Pi * 80m

Circumference = 251.2m.

Total inside length of the curved ends.

2)Total distance round inside of track =

2(125) + 251.2m

= 250 + 251.2

= 501.2m

3) Area of circular ends =

Pi*r^2

= Pi*40^2

= 5024m^2

Area of central area (rectangle)

length * width

125m * 80m

= 10,000m^2

Total area inside track =

5,024m^2 + 10,000m^2

= 15,024m^2

Hope this helps.

:-)

7 0
3 years ago
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