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2 years ago

Plssssssssssssssss help me

Mathematics

1 answer:

Romashka-Z-Leto [24]2 years ago

8 0

Square prism

because of the two squares on the side and it’s a prism not a pyramid because it just isn’t lol

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Henrietta bought 4 hats for $8.99 each and 3 pairs of sunglasses. Eseh pair of sunglasses cost $7. She

amm1812

Answer:

$6.96

Step-by-step explanation:

(4*8.99) + (3*7)

35.96 + 21 = 56.96

50- 56.96 = -6.96 So she owes 6.96

4 0

2 years ago

Read 2 more answers

Enter the answer as an exact decimal or simplify

bixtya [17]

Answer:

1/2

Step-by-step explanation:

Write all numerators above the leas common denominator 10

Calculate the sum -2+7=5

5/10

reduce the fraction by dividing both sides by 5

6 0

2 years ago

Find the angle between the given vectors to the nearest tenth of a degree. u = <-5, -4>, v = <-4, -3> (1 point)

sesenic [268]

Angle between $u = -5i-4j , v=-4i-3j$ is $x =0$ ° .

<u>Step-by-step explanation:</u>

We have , two vectors u = <-5, -4>, v = <-4, -3> or , $u = -5i-4j , v=-4i-3j$

We need to find angle between these two vectors . Let's find out:

We know that dot product of two vectors is defined as :

$u.v =|u|(|v|)cosx$ , where x is angle between u & v !

⇒ $u.v =|u|(|v|)cosx$

⇒ $cosx =\frac{u.v}{|u|(|v|)}$

Now , $u.v = (-5i-4j)(-4i-3j)$

⇒ $u.v = (-5i-4j)(-4i)-(-5i-4j)(3j)$

⇒ $u.v = 20+12$ { $i(j) = j(i) =0$ }

⇒ $u.v = 32$

Now , Modulus of any vector $r = xi+yj$ is $|r| = \sqrt{x^{2}+y^{2}}$ So ,

$|u| = \sqrt{(-5)^{2}+(-4)^{2}} = \sqrt{25+16} = \sqrt{41} \\\\|v| = \sqrt{(-4)^{2}+(-3)^{2}} = \sqrt{16+9} = \sqrt{25} = 5$

Putting all these values in equation $cosx =\frac{u.v}{|u|(|v|)}$ we get:

⇒ $cosx =\frac{32}{5(\sqrt{41})}$

⇒ $cos^{-1}(cosx) =cos^{-1}(\frac{32}{5(6.4)})$

⇒ $x =cos^{-1}(1)$ { $cos0 = 1$ }

⇒ $x =0$ °

Therefore , Angle between $u = -5i-4j , v=-4i-3j$ is $x =0$ ° .

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3 years ago

Which fraction is equivalent to 6/-8? Please help! It will be appreciated

Bas_tet [7]

Answer:

it would be the last one

Step-by-step explanation:

hope it helps

7 0

2 years ago

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Suppose a normal distribution has a mean of 26 and a standard deviation of 4. What is the probability that a data value is betwe

lions [1.4K]

Answer:

20.3%

Step-by-step explanation:

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3 years ago