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Lisa [10]
2 years ago
13

Find the value of the variable in the isoscells trapezoid. 55 (2x + 15)

Mathematics
1 answer:
ValentinkaMS [17]2 years ago
5 0
It could be x=30 I think I'm not sure
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Is this answer right?? If not what’s the real answer? I’m trying to practice for my STAAR.
Ierofanga [76]

35

Area of rectangle

21m^2

Area of one triangle

divide length of 7 by 2 (3.5)

gives you length b (unknown side that is not hypotenuse)

then multiply by width of triangle (4)

3.5 * 4 = 14

and in this situation there is no need to divide by two, because you essentially have one full square from both the triangles. this only works when both triangles are the same.

add the area of the rectangle

14+21= 35

35m^2

8 0
2 years ago
The variables A, B, and C represent polynomials where A = x + 1, B = x2 + 2x − 1, and C = 2x. What is AB + C in simplest form?
topjm [15]
AB + C
= (x + 1)(x^2 + 2x - 1)  +  2x
= x^3 + 2x^2 - x + x^2 + 2x - 1 + 2x
= x^3  + 3x^2 + 3x - 1
3 0
3 years ago
Read 2 more answers
Please helpppp !!!!!
MrRissso [65]
The answer is
2(pi)/3
Because 4(pi)-/5 minus 2(pi)-/5 is 2(pi)-/5
After that you cancel -/5 from the numerator and denominator to get 2(pi)/3
8 0
2 years ago
Read 2 more answers
I NEED HELP I DONT UNDERSTAND IT!! ASAP FOR A TEST
IRINA_888 [86]
The answer will be will be C
Because it’s reflected
5 0
3 years ago
Read 2 more answers
If the area of a circle measures 9π cm2, what is the circumference of the circle in terms of π?
8_murik_8 [283]

Answer: option B

Step-by-step explanation:

The circumference of a circle can be calculated with this formula:

C=2\pi r

Where "C" is the circumference of the circle and "r" is the radius of the circle.

The area of a circle can be calculated with:

A=\pi r^2

Where "r" is the radius.

Knowing the area, you can solve for the radius:

r^2=\frac{9\pi cm^2}{\pi }\\\\r=\sqrt{\frac{9\pi cm^2}{\pi } }\\\\r=3cm

Substituting into  C=2\pi r, you get that the circumference of this circle is:

 C=2\pi (3cm)=6\pi\ cm

8 0
3 years ago
Read 2 more answers
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