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3 years ago

You spin the spinner twice. What is the probability of landing on a 5 and then landing on a number less than 8?

Mathematics

2 answers:

mylen [45]3 years ago

3 0

Answer:

1/4

Step-by-step explanation:

here we have 4 expectations from 8 expectations from 2 spins.

But we have to multiply the outcomes of 4 each turn with 4 the second turn to see 16 outcomes.

For the first we have 1/4 and second we clearly have 3/4

We then add the outcomes 4 and multiply the bottom = 4/16

this = 1/4

Which is the same as subtraction.

1/2 - 1/4 = 1/4

baherus [9]3 years ago

3 0

The answer is 1/4 .,...

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Alis needs 10 strips of ribbon each 2 and 1/2 feet. how much ribbon in all is needed

BlackZzzverrR [31]

Answer:

She needs 25 feet

Step-by-step explanation:

10 * 2.5 = 25

5 0

3 years ago

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Can someone help me solve this problem?

ioda

The scale factor was D. 4. We can figure this out by multiplying 3 by 4 to get 12 and 1 by 4 which is 4 to get the dimensions of the larger triangle.
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4 years ago

Solve and verify each of the following systems of linear equations 4y=3x+7 and 9x+4y-139=0

nignag [31]

Rearranging the first equation:-

3x - 4y = -7
9x + 4y = 139

12x = 132
x = 132/12 = 11
Substituting fro x in the second equation:-
9(11) + 4y = 139
4y = 139 - 99 = 40
y = 40/4 = 10

Answer x = 4 , y = 10.

7 0

4 years ago

50 POINTS FOR CORRECT ANSWER @PlatoNation REPORTED IF INCORRECT

aleksandrvk [35]

Answer:

About 2614 years.

Step-by-step explanation:

We are given k, and the information that N/N0 = 0.77, so the C-14 function becomes:

$N=N_0\cdot e^{-kt} \\0.77N_0 = N_0\cdot e^{-kt}\\0.77 = e^{-0.0001 t}$

and we can solve for t:

$0.77 = e^{-0.0001 t}\\\ln0.77 = \ln e^{-0.0001 t}\\\ln 0.77 = -0.0001 t\implies\\t = -\frac{\ln0.77}{0.0001}=2613.65\approx 2614\,\,\,\mbox{years}$

The estimated age of the bird skeleton is 2614 years.

3 0

4 years ago

Alana paid $54 for a set of 6 ice-skating lessons. She also paid $29.80 for a pair of ice skates.

Sladkaya [172]

Answer:

Answer is in explanation

Step-by-step explanation:

1ST STEP:

54÷6=9 (one ice skating lesson)

2ND STEP:

$29.80-$9=$____ (FINAL ANSWER)

Hope this helped

6 0

2 years ago