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vodomira [7]
3 years ago
9

If x = 7, find the value of a) x2 b) (x + 3)*2

Mathematics
1 answer:
Fynjy0 [20]3 years ago
3 0

Answer:

a) 49

b) 100 (I'm assuming that the 2 was supposed to be a square)

Step-by-step explanation:

Substitute the value in for x (the value being 7):

7² = 49

(7 + 3)² = (10)² = 100

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Please help and explain.
REY [17]

Answer:

Domain: All real numbers greater than or equal to 1.

Step-by-step explanation:

Answer 1: -14 is not in the domain

Answer 2: 4 is included in the domain

3 0
2 years ago
Which postulate or theorem, if any, could be used to prove the triangles congruent? If not
inysia [295]
Question 11a)

We are given side BC equals to side CE and angle CBA equals to angle CED
We also know that angle ACB equals to angle ECD are equal (opposite angles properties)

We have enough information to deduce that triangle ABC and triangle CDE are equal by postulate Angle-Side-Angle (ASA)

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Question 11b)

We are given side AB equal to side ED, side BC equals to side EF, and side AC equals to side DF
We have enough information to deduce that triangle ABC and triangle DEF congruent by postulate Side-Side-Side (SSS)

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Question 11c)

We are given side AC equals to side DF, angle ABC equals to angle DEF, and angle BAC equals to angle EDF

We have enough information to deduce that triangle ABC congruent to triangle DEF by postulate Angle-Side-Angle (ASA)

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Question 11d)

We do not have enough information to tell whether this shape congruent or not
7 0
3 years ago
Read 2 more answers
What is the equation of the parabola?
frutty [35]
Y=-1/20(x+3)^2

Your could always tell by which way the curve is pointing and if pointing down it’s a negative it’s pointing up it’s a positive

Hope that helped
7 0
3 years ago
Could life live on earth if thare was oling oxygen in the air??????
Inga [223]
Nope you can't live on the earth without oxygen
8 0
3 years ago
Can you please help me thank you!!!
taurus [48]

Answer:

517.5 mi^2

Step-by-step explanation:

Divide shapes into 3 shapes ( 1 triangle and 2 rectangles

b = 17

h = 25

Area of triangle =  Bh

A =  (17)(25)

A = 212.5 mi^2

Area of 1st rectangle = lw = 17(9) = 153 mi^2

Area of 2nd rectangle = lw = 19(8) = 152 mi^2

Area of figure = 212.5 +153 + 152 = 517.5 mi^2

8 0
2 years ago
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