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Xelga [282]
2 years ago
7

A student builds a model of a race car. The scale is 1:15 in the scale model,the car is 8cm tall. How tall is the actual car?

Mathematics
1 answer:
ycow [4]2 years ago
5 0

Answer: 120cm

Step-by-step explanation i took the test

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Find the area of the composite figure.
AysviL [449]

Answer:

The area will be 834.38

Step-by-step explanation:

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5 0
3 years ago
Y=y = 2x -4 when x= 2
Dominik [7]
Y would equal 0. 2x2=4 and 4-4=0.
7 0
3 years ago
Let R1 and R2 are the remainders when the polynomials x^3 + 2x^2 − 5ax − 7 and x^3 + ax^2 − 12x + 6 are divided by x + 1 and x −
Andru [333]

Answer:

2.44

Step-by-step explanation:

Given: x³ + 2x² - 5ax - 7      and  x³ + ax² - 12x + 6

Also, R1 + R2 = 6

in order to find the value of a:

Let p(x) = x³ + 2x² - 5ax - 7 and q(x) = x³ + ax² - 12x + 6

Using remainder theorem i.e if a polynomial p(x) is divisible by polynomial of form x - a then remainder is given by p(a).

Then,

R1 = p( -1 ) = (-1)³ + 2(-1)² - 5a(-1) - 7 = -1 + 2 + 5a - 7 = 5a - 6

R2 = q( 2 ) = 2³ + a(2)² - 12(2) + 6 = 8 + 4a - 24 + 6 = 4a - 10

Now,

R1 + R2 = 6

5a - 6 + 4a - 10 = 6

9a = 22

a=2.44

Therefore, Value of a is 2.44

7 0
3 years ago
Find the length of side a.
coldgirl [10]
The length of side A is 194
6 0
3 years ago
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In the equation, which is true about the value of x? 4(2x + 3) = x(3 + 5) + 12
Dmitrij [34]

The statement is true. X= all real numbers

6 0
3 years ago
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