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fgiga [73]
3 years ago
12

This table shows Jill’s math quiz scores. What is the minimum score she needs on her next quiz to have a mean of at least 92?

Mathematics
1 answer:
Marat540 [252]3 years ago
3 0

Answer:

<em>~ Jill needs a minimum score of 90% to recieve an average of at least 92% on all her math quizzes ~</em>

Step-by-step explanation:

1. The table shows that her past weeks math quiz scores are: 92, 96, 94, 88

2. If she were to get a mean, or average, of at least 92, we could set up an equation to determine the minimum score she will recieve on her next quiz:

92 + 96 + 94 + 88 + x/ 5 = 92 ⇒ <em>(where x is the minimum score she should recieve on her next quiz to get an average of at least 92%)</em>

3. Now let us solve this equation for x through simple algebra ⇒

92 + 96 + 94 + 88 + x/ 5 =  92 ⇒

370 + x/5 = 92 ⇒

x/5 + 74 = 92 ⇒

x/5 = 18

x = 90

4. <em>Jill needs a minimum score of 90% to recieve an average of at least 92% on all her math quizzes</em>

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Y=4x y=-2x-6 how to sovle this
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Answer:


Step-by-step explanation:


Substitute 4x for Y: 4x = -2x -6


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3 0
4 years ago
Un joven retira el 25% de sus ahorros y gasta el 33.3% en adornos para su
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Answer:

$3003.2

Step-by-step explanation:

Step 1

Paso 1

Averiguamos cuánto era el 25% de sus ahorros.

Se nos dice en la pregunta que gastó el 33.3% en decoraciones para su nueva casa y si los adornos cuestan $ 250.00.

Esto significa

33.3 % × x = 250

33.3 x/ 100 = 250

Cruz multiplicar

33.3x = 250 × 100

x = 25.000 / 33.3

x = 750.75075075

Por lo tanto, la cantidad o el costo de los adornos = 33.3% del 25% de sus ahorros = $ 750.8

Paso 2

De la pregunta:

Un joven retira el 25% de sus ahorros y

Por lo tanto:

Sea y = monto total de sus ahorros

25/100 × y = $ 750.8

25y = 100 × 750.8.

y = 100 × 750.8 / 25

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Por lo tanto, tenía $ 3003.2 en su cuenta.

6 0
3 years ago
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Firdavs [7]

Answer:

To simplify the ratio, you can put it into a fraction and divide both the numerator and the denominator

Both numbers can be divided by 7

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35/7= 5

3 lizards: 5 frogs

Step-by-step explanation:

Hope this helps!

BTW...if y'all have any questions for school (it can be any grade level or subject) just comment here and I will get to it as soon as I can!! ❤

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