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Helen [10]
3 years ago
11

Please answer number 71

Mathematics
1 answer:
VLD [36.1K]3 years ago
4 0
A rotation on its axis of 180 degrees
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Evaluate the expression 3.14(a2 + ab) when a = 3 and b = 4. (Input decimals only, such as 12.71, as the answer.)
soldier1979 [14.2K]
A= 3
b= 4

=3.14(a^2 + ab)
substitute the given a & b values in expression

=3.14((3)^2 + (3*4))
multiply inside parentheses

=3.14(9 + 12)
add inside parentheses

=3.14(21)
multiply

=65.94


ANSWER: 65.94

Hope this helps! :)
8 0
3 years ago
Determime the measures of angles X,y and Z
Ierofanga [76]

Answer:

X = 75°

Y = 105°

Z =75

Step-by-step explanation:

8 0
3 years ago
On a coordinate plane, triangle R S T has points (negative 5, 6), (3, 4), and (negative 2, 2). Which expression can be used to f
pav-90 [236]

The area of a triangle is the amount of space on the triangle

The expression that represents the area of the triangle is A = \frac 12|-5(2 -4) +3(2 -6) -2(4 -6)|

The coordinates of the triangle are given as:

R = (-5,6)

S = (3,4)

T = (-2,2)

The area (A) of a triangle from its coordinates or vertices are:

A = \frac 12|x_1(y_3 -y_2) +x_2(y_3 -y_1) + x_3(y_2 -y_1)|

Substitute values for x's and y's

A = \frac 12|-5(2 -4) +3(2 -6) -2(4 -6)|

Hence, the expression that represents the area of the triangle is A = \frac 12|-5(2 -4) +3(2 -6) -2(4 -6)|

Read more about areas of triangles at:

brainly.com/question/9664477

6 0
2 years ago
How would you estimate whether 27/50 is closer to 1/2 or 1 without using a number line? Explain.
Ivahew [28]

Answer

Find\ out\ the\ how\ would\ you\ estimate\ whether\ \frac{27}{50}\ is\ closer\ \frac{1}{2}  to\ or 1\ without\ using\ a\ number\ line .

To prove

As\ the\ value\ of\ \frac{27}{50}\ in\ decimal\ form.

= \frac{27}{50}

= 0.54

As\ the\ value\ of\ \frac{1}{2}\ in\ decimal\ form.

= \frac{1}{2}

= 0.5

As\ the\ value\ of\ 1 \ in\ decimal\ form.

= 1.00

Now we find out the mid point of the 0.5 and 1.00 .

Mid\ point = \frac{1.00+0.5}{2}

(Mid point is the point lies middle of a line segment .)

Mid point = 0.75

Thus

0.54< 0.75

This shows o.54 lies between 0.5 and 1.00

This means 0.54 lies right to 0.5 and left from 1.00 .

Therefore

\frac{27}{50}\ lies\ right\ to\ \frac{1}{2} and\ left\ from\ 1.



7 0
3 years ago
A bulldozer could carry 1/8 a ton of sand. A park need 3 tons. How many loads will the bulldozer need to carry
Kay [80]

Answer:

24

Step-by-step explanation:

3 0
3 years ago
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