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2 years ago

Rearrange to make x the subject 4(x-3)/a=y

Mathematics

1 answer:

klio [65]2 years ago

3 0

Answer:

Answer: x = a*y + 3

Step-by-step explanation:

To make x the subject of the equation, first, we open the bracket

4x - 12/a = y

Then cross multiply:

4x - 12 = a * y ( a*y means the product of the two variables)

Add 12 to both sides of the equation

4x = a*y + 12

Divide both sides by 4 to get the value of x

x = a * y + 12/4

x = a*y + 3

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2. Olivia bowled 5 games. Her scores were 80, 95, 100, 85, and 95. What is the mean of her scores for the 5 games? * A. 20 B. 72

o-na [289]

To find the mean of a set of values, add the values and divide by the number of values.

mean = (sum of values)/(number fo values)

mean = (<span>80 + 95 + 100 + 85 + 95)/5 = 455/5 = 91

Answer: C. 91</span>

6 0

2 years ago

A marketing researcher conducts a test to determine whether the number of chocolate chips per cookie differs significantly acros

Yuki888 [10]

Answer: the value for the associated test statistic is 1.2653

Step-by-step explanation:

Given that;

sample size one n₁ = 10

mean one x"₁ = 6.4

standard deviation one S₁ = 1.1

sample size two n₁ = 11

mean two x"₂ = 5.6

standard deviation one S₁ = 1.7

H₀ : μ₁ = μ₂

H₁ : μ₁ ≠ μ₂

Pooled Variance

sp = √( { [(n₁ - 1) × s₁² + (n₂ - 1) × s₂²] / (n₁ + n₂ - 2)} × (1/n₁ + 1/n₂))

we substitute

= √( { [(10 - 1) × (1.1)² + (11 - 1) × (1.7)²] / (10 + 11 - 2)} × (1/10 + 1/11))

= √( { [(9) × 1.21 + (10) × 2.89] / (19) } × (0.1909))

= √({[ 39.79 ] / 19} × (0.1909))

= √( 2.0942 × 0.1909)

= √( 0.39978 )

= 0.63228

Now Test Statistics will be;

t = ( x"₁ - x"₂) / sp

we substitute

t = ( 6.4 - 5.6) / 0.63228

t = 0.8 / 0.63228

t = 1.2653

Therefore the value for the associated test statistic is 1.2653

5 0

3 years ago

Which represents the inverse of the function f(x) = 4x?

Luda [366]

Answer:

h(x)=1/4x

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Q + 5/9= 1/6 from big ideas mathbook

Alika [10]

9We have such eqation
Q $+ \frac{5}{9} = \frac{1}{6}$ /*9 (multiply both sides by 9)
9Q+5= $\frac{9}{6}$ /-5 both sides
9Q= $\frac{9}{6}- 5$
9Q= $\frac{9}{6}- \frac{5*6}{6}$
9Q= $\frac{9-30}{6}$
9Q=- $\frac{21}{6}$ /:9 divide both sides by 9
Q=- $\frac{21}{6}:9$
Q $\frac{21}{6*9} =- \frac{21}{54}=[tex] \frac{7}{18}$ - its the answer

6 0

2 years ago

Read 2 more answers

How much is a one time investment of 250 be when invested at 6% for 40 years in compound annually

vova2212 [387]

6% increase is multiply by 1,06

done 40 times

so : 250* 1,06^40 = 2571 ,

7 0

1 year ago