Please help answer !:)

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Answer:

B taken the test  before

Step-by-step explanation:

B. 8, 16, 24, 48

pls mark brainliest if helped c:

Answer:

energy equals mass times the speed of light squared

Step-by-step explanation:

Answer:

the answer is 150

.....

Answer:

150

Step-by-step explanation:

(4.5 x 10^4)/300=(4.5 x 10,000)/300=45,000/300=150

Step-by-step explanation:

[tex]x = 2[/tex]

[tex]y = - 2[/tex]

[tex]z = 4[/tex]

[tex] \: [/tex]

[tex] = 2xy + 3yz - xyz[/tex]

[tex] = y.(2x + 3z - xz)[/tex]

[tex] = y.(2x + z.(3 - x))[/tex]

[tex] = - 2.(2.2 + 4.(3 - 2))[/tex]

[tex] = - 2.(4 + 4.1)[/tex]

[tex] = - 2.(4 + 4)[/tex]

[tex] = - 2.8[/tex]

[tex] = - 16[/tex]

Answer:

B = 68

Step-by-step explanation:

(6-2)×180 = 720

69+108+135+204+b+2b=720

516+3b=720

3b=720-516

3b=204

b= 68

Answer:

a- Vernon practiced soccer 5  3/4hours this week. He practiced 4  1/3hours on weekdays and the rest over the weekend.

Step-by-step explanation:

Hope this helps

Answer:

Chord: Secant: Tangent: Radius: Diameter: Using String to Draw a Circle Tell whether the line, ray, or segment is best described as and the radius and the diameter as lengths. P secant point of tangency tangent.

Answer:

-3.5

Step-by-step explanation:

Answer:

(I) -8, -5, 1, 2

(ii) -5, -4, -3, 2

(iii) -15, -10, -7

Step-by-step explanation:

You can think about what a number line looks like to solve problems like this, for example a number line that goes from -10 to 10 would look something like this, with smaller numbers on the left and bigger on the right

-10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10

Answer:

4 1/2 flowers

Step-by-step explanation:

2 + 3 = 5 and 4 x 5 = 20 and plus half a flower.

Answer:

A= 6/8 gallons

Answer:

(x-2)*x

Step-by-step explanation:

[tex]x^{2}-2x[/tex]

its maximum common divisor is x

[tex]\frac{x^{2}-2x }{x}[/tex]

[tex](x-2)*x[/tex]

Answer:

a) [tex]S(t) = 42(0.9995)^t[/tex]

b) It will take 10,692 years.

Step-by-step explanation:

Exponential function to determine the amount of substance:

An exponential function to determine the amout of substance after t years is given by:

[tex]A(t) = A(0)(1-r)^{t}[/tex]

In which A(0) is the initial amount and r is the decay rate, as a decimal.

(a) Write an equation to determine the amount of substance, S, left after t years.

Half-life of 1300 years means that [tex]A(1300) = 0.5A(0)[/tex].

We use this to find r. So

[tex]A(t) = A(0)(1-r)^{t}[/tex]

[tex]0.5A(0) = A(0)(1-r)^{1300}[/tex]

[tex](1-r)^{1300} = 0.5[/tex]

[tex]\sqrt[1300]{(1-r)^{1300}} = \sqrt[1300]{0.5}[/tex]

[tex]1 - r = 0.9995[/tex]

[tex]r = 0.0005[/tex]

Sample of 42 grams means that [tex]A(0) = 42[/tex]. So

[tex]A(t) = A(0)(1-r)^{t}[/tex]

Replacing A by S, just for notation purposes

[tex]S(t) = 42(0.9995)^t[/tex]

(b) Approximately how long will it take for 0.2 grams of substance to remain (to the nearest year)?

This is t when [tex]S(t) = 0.2[/tex]. So

[tex]S(t) = 42(0.9995)^t[/tex]

[tex]0.2 = 42(0.9995)^t[/tex]

[tex](0.9995)^t = \frac{0.2}{42}[/tex]

[tex]\log{(0.9995)^t} = \log{\frac{0.2}{42}}[/tex]

[tex]t\log{0.9995} = \log{\frac{0.2}{42}}[/tex]

[tex]t = \frac{\log{\frac{0.2}{42}}}{\log{0.9995}}[/tex]

[tex]t = 10692[/tex]

It will take 10,692 years.

Answer:

The word "of" in mathematical terms means multiplication. The word "is" means equal. This would be translated into 50% x 25% x X = or 0.50 x 0.25 x X =. 0.50 times 0.25 = 0.125. Putting 0.125 into a fraction, it would be 125/1000. Simplify this fraction to get 1/8. So, the answer would be A.

Answer:

Inequality is 460x+ 145 [tex]\leq[/tex] 625 (I can't put the less than or equal to sign down sorry)

Step-by-step explanation:

Answer:

who are you thanking? Lol

Step-by-step explanation:

Step-by-step explanation:

The required shape is a square.

Refer to the attachment.

The sides of a square are equal. So, the answer is a square.

[Drawing Courtesy- Brainly app]

Answer: B, C, D

Step-by-step explanation:

/\.p.€.x

       Since, tigonometric identities are equal on both the sides (left hand side and right hand side) of the equation, Options (B), (C), and (D) represent the dientities.

Option A

cos(x + y) + cos(x - y) = cos²2x - sin²2y

Left hand side = cos(x + y) + cos(x - y)

                        = cosx.cosy - sinx. siny + cosx.cosy + sinx.siny

                        = 2(cosx.cosy)

But the left side of the equation is (cos²2x - sin²2y).

Hence both the sides are not equal and it's not an identity.

OPtion (B).

sin(x - π) = -sinx

Left hand side = sin(x - π)
                        = -sinx sin(x - π)

                        = sinx.cosπ - cosx.sinπ

                        = -sinx - 0  

                        = -sinx  [Right hand side]

Since, both the sides are equal, it's an identity.

Option (C).

sin(x + y) - sin(x - y) = 2cosx.siny

Left hand side = sin(x + y) - sin(x - y)

                        = sinx.cosy + cosx.siny - sinx.cosy + cosx.siny

                        = 2cosx.siny

                         = Right hand side

Since, both the sides are equal, it's an identity.

Option (D).

cos(x + y) + cos(x - y) = 2cosx.cosy

Left hand side = cos(x + y) + cos(x - y)

                        = cosx.cosy - sinx.siny + cosx.cosy + sinx.siny = 2cosx.cosy                        

                        = Right hand side

Since, both the sides of the equation are are equal.  It's an identity.

       Therefore, Option (B), (C), (D) are the correct options.

Learn more about the trigonometric identities here,

https://brainly.com/question/12526684?referrer=searchResults

Answer:

The area is 13

Step-by-step explanation:

By using the third picture you sent I figured out the area of both the triangle (area: 3) and the square (area: 4) and subtracted that from the area of the whole figure (20) to get the area of the shape.

Answer:

8 possible outcomes

Step-by-step explanation:

Answer:

8 is correct!!

Step-by-step explanation:

Answer:

1. V = 37.7

2. V =603.19

Step-by-step explanation:

1. V = (3.14)×3^2 4/3

V =37.7

2. V=(3.14)×(3×4)^2 4/3

V = (3.14)×12^2 4/3

V = 603.19

Answer:

750

Step-by-step explanation:

150/2=7.5

7.5*100=750

750*0.2=150

Answer:

the first one is 62 and the second one

Step-by-step explanation:

i dont know the second one

Answer: 11 people like vanilla.

Step-by-step explanation: There are 50 people in this question. Since 22% of them like vanilla, multiply 0.22 and 50. That gives you 11. Therefore, 11 people out of 50 like vanilla.

Answer:The absolute error is that they said that the finance charge will be $12.22 but the charge ends up being $19.54 . As for the relative error is that they said that the charge will be $12.22 but the charge was $19.54 which means they were unsure what the charge was and failed to check what it actually was.

Step-by-step explanation:

Answer:

y= ax+mb

Step-by-step explanation: