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Cloud [144]
3 years ago
12

Someone help me ( view picture below )

Mathematics
1 answer:
oksano4ka [1.4K]3 years ago
5 0

Answer:

D. 13

Step-by-step explanation:

x = 5

2 x 5 + 3 = 13

5 + 8 = 13

meaning the side length has to be 13, also.

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2y+18=42 what is y, and how would you find it?
Nesterboy [21]

Answer:

y=12

Step-by-step explanation:

Use order of operations. Subtract 18 from both sides and the divide by 2.

2y+18 -18=42-18

2y=24

y=12

3 0
3 years ago
Find the area of an equilateral triangle (regular 3-gon) with the given measurement.
olga nikolaevna [1]

The formula for finding the area of an equilateral triangle is

square root of 3 * (a^2/2)

a is the side length so in this case is 6

square root of 3 * (18)

the area is about 15.6

6 0
3 years ago
If Ryan gives 2/6 of his 36 cards to Max, how many cards does he give Max?
diamong [38]

Answer:

Hi there

Your answer is

He gives Max 12 cards

Step-by-step explanation:

2/6 of 36

2/6 * 36/1

72/6=12

12 cards is 2/6th of 36 cards

4 0
3 years ago
Read 2 more answers
Solve the formula for b2. A=1/2h(b1+b2)
Katena32 [7]

Firstly, multiply both sides by 2: 2A=h(b_1+b_2)

Next, divide both sides by h: \frac{2A}{h}=b_1+b_2

Next, subtract both sides by b1, and <u>your answer will be \frac{2A}{h}-b_1=b_2</u>

8 0
3 years ago
Za and Z6<br> are<br> complementary angles. Za measures 78°.<br> What is the measure of Zb?
VARVARA [1.3K]

Answer:

\boxed{\angle b = 12 \degree}

Given:

\angle a \: and \: \angle b \: are \: complementary \: angles\\ \\ \angle a = 78 \degree

Step-by-step explanation:

Two Angles are Complementary when they add up to 90° (a Right Angle).

=  > \angle a + \angle b = 90 \degree \\  \\  =  >  78 \degree +  \angle b = 90\degree \\  \\  =  > \angle b = 90 \degree - 78 \degree \\  \\  =  >  \angle b = 12 \degree

5 0
3 years ago
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