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3 years ago

Could anyone please help me FAST!

Mathematics

2 answers:

STALIN [3.7K]3 years ago

8 0

Answer:

1/20

Step-by-step explanation:

The only way it can equal 2 is if both spinners land on 1 because 1 + 1 = 2.

The probability of the 1st spinner landing on 1 is 1/4.

The Probability of the 2nd spinner landing on 1 is 1/5.

To find out the Probability of them landing together it would be 1/5 times 1/4 which equals 1/20.

rusak2 [61]3 years ago

7 0

Answer:

B) 2/9

Step-by-step explanation:

first count the number of sections in the first circle do the same with the second one also one done add both together next find the no. 2on each circle ( there are only 2 two's right). hope the explanation was helpful

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Darina [25.2K]

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3 years ago

How many ml of a 20% acid mixture and a 80% acid mixture should be mixed to get 120ml of a 35% acid mixture?

shutvik [7]

Answer:

Volume of Mixture A =90 ml

Volume of Mixture B =30 ml

Step-by-step explanation:

Let say, Mixture A + Mixture B = Mixture C

Volume of Mixture A is x

Volume of Mixture B is y

So, Volume of Mixture C is x+y = 120 ml

Now, Acid contain in Mixture A is 20% =0.2x

Acid contain in Mixture B is 80% =0.8y

Also, Acid contain in Mixture C is 35% =(0.35)(x+y) = 0.35×120=42

Now, we know that,

Acid contain of Mixture A + Acid contain of Mixture B=Acid contain of Mixture C

∴ 0.2x+0.8y=42

∴ 2x+8y=420

We get two linear equations

2x+8y=420 and x+y = 120

Solving above equation...

∴ x=120-y

Replacing x value in 2x+8y=420

∴ 2(120-y)+8y=420

∴ 240-2y+8y=420

∴ 6y=180

∴ y=30

Replacing y value in any equation

∴ x=120-y=120-30=90

∴ x=90

Thus,

Volume of Mixture A is x=90 ml

Volume of Mixture B is y=30 ml

3 0

3 years ago

There are 8 watermelons and 6 apples in the shopping cart. What is the ratio of

Anestetic [448]

<h2><u>RATIO</u></h2>

<h3><u> $\underline \mathcal{PROBLEM:}$ </u></h3>

» There are 8 watermelons and 6 apples in the shopping cart. What is the ratio of apples to total fruits? Be sure to write your answer in lowest terms.

<h3> $\underline{ \mathcal{ANSWER:}}$ </h3>

$\blue{ \bold{4:7}}$

— — — — — — — — — —

<h3> $\underline{ \mathcal{EXPLANATION:}}$ </h3>

Based on the problem, there are 8 watermelons and 6 apples in the shopping cart. So,

$\sf \: Apple = \green6$

$\sf \: Watermelon = \green 8$

$\sf \: Total \: Fruits= \green {14 }$

Therefore, the ratio of apples to total fruits is 8:14 and its lowest term is 4:7.

_______________∞_______________

3 0

2 years ago

What is the measure of the inscribed angle ABC if the measure of the arc, which this angle intercepts is:

Margaret [11]

I believe the answer should be A

5 0

3 years ago

The formula for wind chill C (in degrees Fahrenheit) is given by C = 35.74 + 0.6215T - 35.75v^0.16 + 0.4275Tv^0.16 where v is th

Diano4ka-milaya [45]

Answer:

dC = 2.44

Relative error = 19%

Step-by-step explanation:

$C = 35.74 + 0.6215*T - 35.75*v^(0.16) + 0.4275*T*v^(0.16)$

Δv = 3 ; ΔT = 1 , v = 23, T = 8

Use differential Calculus

$dC = Cv.dv + Ct.dt$

$Cv = dC/dv = -5.72*v^(-0.84) + 0.0684*T*v^(-0.84)\\Ct = dC/dT = 0.6215 + 0.4275*v^(0.16)\\dC = modulus (Cv.dv) + modulus (CT.dT)\\dC = (-5.72*v^(-0.84) + 0.0684*T*v^(-0.84))* 3 + (0.6215 + 0.4275*v^(0.16))*1\\dC = 2.44$

Relative Error

dC / C @(T = 8, v=23) * 100 = 19 %

8 0

3 years ago