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2 years ago

Can someone plssss answer this.

Mathematics

1 answer:

goblinko [34]2 years ago

8 0

1: B
because a triangle angles all have to add up to 180

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Jack types 162 words in 3 minutes. Jack types at a constant rate. How many words does Jack type per minute?

Arte-miy333 [17]

Answer:

Step-by-step explanation:

162/3 = 54

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2 years ago

How much principal must be deposited to earn $1000 simple interest in 2 years at a rate of 5%

Murrr4er [49]

Answer:

1100 brainliest please

Step-by-step explanation:

1000×2×0.05=100

1000+100=110

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2 years ago

What is 4.06 increased by 17? please help me

Dafna1 [17]

Answer:

21.06

Step-by-step explanation:

4.06 increased by 17

4.06 + 17

21.06

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2 years ago

What is the arc measure of YWZ in degrees? (5w+4) (11w)

Rashid [163]

Answer:

59 degrees

Step-by-step explanation:

In the figure below, XZ is a diameter of circle A.

Since the Angles (5w+4) and (11w) forms a straight line, then:

$(5w+4)^\circ+(11w)^\circ=180^\circ\\5w+11w+4=180\\16w=180-4\\16w=176\\w=\frac{176}{16}\\ w=11$

Therefore, the arc measure of YZ will be:

$5w+4=5*11+4=59^\circ$

4 0

2 years ago

Find the vector projection of B onto A if A = 5i + 11j – 2k,B = 4i + 7k

valkas [14]

Answer:

$\frac{3}{13} i+\frac{11}{130} j-\frac{6}{65} k\\$

Step-by-step explanation:

Given A = 5i + 11j – 2k and B = 4i + 7k, the vector projection of B unto a is expressed as $proj_ab = \dfrac{b.a}{||a||^2} * a$

b.a = (5i + 11j – 2k)*( 4i + 0j + 7k)

note that i.i = j.j = k.k =1

b.a = 5(4)+11(0)-2(7)

b.a = 20-14

b.a = 6

||a|| = √5²+11²+(-2)²

||a|| = √25+121+4

||a|| = √130

square both sides

||a||² = (√130)

||a||² = 130

$proj_ab = \dfrac{6}{130} * (5i+11j-2k)\\\\proj_ab = \frac{30}{130} i+\frac{11}{130} j-\frac{12}{130} k\\\\proj_ab = \frac{3}{13} i+\frac{11}{130} j-\frac{6}{65} k\\\\$

Hence the projection of b unto a is expressed as $\frac{3}{13} i+\frac{11}{130} j-\frac{6}{65} k\\$

7 0

3 years ago