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3 years ago

QueSLIUIT Which of the following is a rational number 15, V16, 127, V22

Mathematics

1 answer:

shusha [124]3 years ago

3 0

Answer:

.....

Step-by-step explanation:

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What is the area of this trapezoid enter your answer in the box

larisa86 [58]

9514 1404 393

Answer:

336 cm^2

Step-by-step explanation:

The area of a trapezoid is given by the formula ...

A = 1/2(b1 +b2)h

where b1 and b2 are the base lengths, and h is the height. Filling in the values shown gives ...

A = (1/2)(28 +14)(16) = (1/2)(42)(16) = 336 . . . . cm^2

4 0

2 years ago

5,2,4 does this make a triangle

yulyashka [42]

Answer:

Yes

Step-by-step explanation:

Two numbers have to be greater than the other one or it does not make a triangle.

5+2>4, 7>4 true

5+4>2, 9>2 true

4+2>5, 6>5 true

If this helps please mark as brainliest

6 0

2 years ago

Read 2 more answers

Write an expression to represent: 6 times the difference of 5 and 2.

Keith_Richards [23]

Answer:

See below

Step-by-step explanation:

The difference of 5 and 2

5-2 <===== now multply it by 6

6 x (5-2)

4 0

1 year ago

Read 2 more answers

A parachutist's rate during a free fall reaches 180 kilometers per hour. What is this rate in meters per second? At this rate, h

Bumek [7]

Answer:

50 m/s

250 m

Step-by-step explanation:

180 km/hr × (1000 m / km) × (1 hr / 3600 s) = 50 m/s

50 m/s × 5 s = 250 m

5 0

2 years ago

The vertices of a triangle ABC are A(7, 5), B(4, 2), and C(9, 2). What is measure of angle ABC? 30° 45° 56.31° 78.69°

GenaCL600 [577]

The measure of angle ABC is 45°

Explanation

Vertices of the triangle are: A(7, 5), B(4, 2), and C(9, 2)

According to the diagram below....

Length of the side BC (a) $=\sqrt{(4-9)^2+(2-2)^2}= \sqrt{25}= 5$

Length of the side AC (b) $= \sqrt{(7-9)^2 +(5-2)^2}= \sqrt{4+9}=\sqrt{13}$

Length of the side AB (c) $= \sqrt{(7-4)^2 +(5-2)^2} =\sqrt{9+9}=\sqrt{18}$

We need to find ∠ABC or ∠B . So using Cosine rule, we will get...

$cosB= \frac{a^2+c^2-b^2}{2ac} \\ \\ cos B= \frac{(5)^2+(\sqrt{18})^2-(\sqrt{13})^2}{2*5*\sqrt{18} }\\ \\ cosB= \frac{25+18-13}{10\sqrt{18}} =\frac{30}{10\sqrt{18}}=\frac{3}{\sqrt{18}}\\ \\ cosB=\frac{3}{3\sqrt{2}} =\frac{1}{\sqrt{2}}\\ \\ B= cos^-^1(\frac{1}{\sqrt{2}})= 45 degree$

So, the measure of angle ABC is 45°

7 0

3 years ago

Read 2 more answers