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lidiya [134]
3 years ago
10

Find the value of x.

Mathematics
1 answer:
GaryK [48]3 years ago
5 0

Answer:

x = 25

Step-by-step explanation:

it's an isosceles triangle so base angles are the same

3x - 30 = 45

Add 30 on both sides

3x = 75

divide both sides by 3

x = 25

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What formula is used ??? Help
Anastasy [175]

I think it's asking for area of rectangle.

Area of rectangle = length • width

4 0
3 years ago
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Find the value of x if the area of the triangle is 357 in2.
masha68 [24]

A. 34 times 21 divided by 2 is 357. area of a triangle is base times height divided by 2.

8 0
3 years ago
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Find the surface area of this triangular prism.
vesna_86 [32]

Answer:

96

Step-by-step explanation:

A=Area

Using the formulas

A= 2A_{b} +(a+b+c)h\\A_{b} = \sqrt{s(s-8)(s-10)(s-6)} \\s= \frac{8+10+6}{2}

Solving for A

A=ah+bh+ch+\frac{1}{2}*\sqrt{-a^4+2(ab)^2+2(ac)^2-b^4+2(bc)^2-c^4}

A=8(2)+10(2)+6(2)+\frac{1}{2}*\sqrt{-8^{4} +2*(8*10)^{2} +2*(8*6)^{2}-10^{4} +2*(10*6)^{2}-6^{4} }A=96

7 0
3 years ago
What is the correct answer?
vovikov84 [41]

Answer:

84 units2

Step-by-step explanation:

First, you multiply 24 *7 = 168

Second, you divide 168 / 2 = 84

Lastly, have a great day!

5 0
3 years ago
How would I get this information into Y=Mx+B
andriy [413]
One question at a time, please.  I will focus on #16 and ignore #18.

slope:  3/4              line passes thru (-8,2)

Write out    y = mx + b.  Subst. 2 for y.  Subst. -8 for x  Subst. (3/4) for m:

2 = (3/4)(-8) + b.  Find b.           2 = -6 + b    =>           b = 8

So your equation is y = (3/4)x + 8.  Please, use (  ) around those fractions!
3 0
3 years ago
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