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KengaRu [80]
3 years ago
11

PLZ HELP! Need this ASAP! Thx so much :)

Mathematics
1 answer:
saul85 [17]3 years ago
5 0

they are giving you the answer AB=AC, so what that means is that the angles are congruent to each other so if angle AC=15 and angle DC=5 all the angles will be the same.

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Answer this question (x −2)(x + 5) = 18
DENIUS [597]

Answer:

x=-7     x=4

Step-by-step explanation:

(x −2)(x + 5) = 18

Foil

x^2 +5x-2x-10 = 18

Combine like terms

x^2 +3x -10 =18

Subtract 18 from each side

x^2 +3x -28 = 0

Factor

What two numbers multiply to -28 and add to 3:   7 and -4

(x+7) (x-4) =0

Using the zero product property

x+7=0    x-4 =0

x=-7     x=4

4 0
3 years ago
Olivia is making model cars to go on shelves in her room. The number of wheels she uses is a function of how many cars she makes
Luba_88 [7]

Answer:

Domain = 1 to 7

Range = 4 to 28

Step-by-step explanation:

Given that:

Number of wheels used is a function of number of cars manufactured.

Number of wheels present = 28

1 car uses 4 wheels

2 cars use 8 wheels.

3 car uses 12 wheels

and so on.

Let the function be of the form:

y =f(x)

Domain of the function is the value of x that can be given as valid input to the function.

Range of the function is the value of y that can be output of the function.

Let x be the number of cars manufactured.

Then value of y is nothing but x times 4.

y=4x

We are given that maximum value of y can be 28.

28 = 4x\\\Rightarrow x =7

Therefore, maximum value of input can be 7.

Minimum number of wheels can be 4 to make a minimum of 1 car.

Therefore domain is 4 to 28 and range is 1 to 7.

3 0
2 years ago
Use the Distance Formula and the Pythagorean Theorem to find the distance, to the nearest tenth, from T(2, –2) to W(–7, 3).
morpeh [17]

Answer:

10.3 units

Step-by-step explanation:

coordinate points are

T(2, -2) =(x1 , y1)

W(-7, 3) =(x2 , y2)

distance formula = \sqrt{(x2 -x1)^2 + (y2 -y1)^2}

=\sqrt{(-7-2)^2 + {3-(-2)}^2

=\sqrt{(-9)^2 + (3+2)^2

=\sqrt{81 + 5^2

=\sqrt{81 + 25

=\sqrt{106  

=10.29563014

=10.3 (after converting it to the nearest tenth)

3 0
2 years ago
Pls help me with this
Kryger [21]

Answer:

A = kr²

Step-by-step explanation:

Given A is directly proportional to r² then the equation relating them is

A = kr² ← k is the constant of variation

8 0
2 years ago
Which linear function passes through (-1,8) and has a slope of -2
vova2212 [387]

Answer:

Step-by-step explanation answer is C

6 0
2 years ago
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