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3 years ago

Solve the compound inequality 7x ≥ –56 and 9x < 54.

Mathematics

1 answer:

mel-nik [20]3 years ago

4 0

X=-1/3 is the answer

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The area of a rectangular field is 5695 m².

denpristay [2]

Answer:

85 m

Step-by-step explanation:

5696/67=85

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2 years ago

A manufacturer of computer logic boards is changing to a new model. The amount of time to setup for the new logic boards is

natima [27]

Answer:

1.5 batches take 12.375 hour

Step-by-step explanation:

The first batch takes 10.5 hours, meaning only .5 batches are left. You then take the time that each new full batch takes (4.25) and divide it by 2 as you only need half of one batch. Meaning 0.5 of a batch takes 2.125 hours. You then take the time of the two batches (10.5, and 2.125) and add them, leaving you with 12.625. Meaning 12.375 is the most viable answer.

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2 years ago

True or False

BigorU [14]

Answer:

1. false

2. true

3. true

4. true

5. true

6. false

Step-by-step explanation:

sub to tapl :L

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2 years ago

Let X1, X2, and X3 represent the times necessary to perform three successive repair tasks at a service facility. Suppose they ar

belka [17]

Answer:

The mean of the total repair time is 150 minutes.

The variance of the total repair time is 725 minutes^2.

Step-by-step explanation:

To solve this problem, we have to use the properties of the mean and the variance. Our random variable is the sum of 3 normal variables.

In the case, for the mean, we have that the mean of the sum of 3 normal variables is equal to the sum of the mean of the 3 variables:

$y=x_1+x_2+x_3 \\\\E(y)=E(x_1+x_2+x_3)=E(x_1)+E(x_2)+E(x_3)\\\\E(y)=50+60+40=150$

For the variance, we apply the property for the sum of independent variables (the correlation between the variables is 0):

$V(y)=V(x_1)+V(x_2)+V(x_3)\\\\V(y)=s_1^2+s_2^2+s_3^2\\\\V(y)=15^2+20^2+10^2\\\\V(y)=225+400+100\\\\V(y)=725$

8 0

3 years ago

A house is bought for £108 000 and then sold at a profit of 14%.<br>Find the selling price.

Genrish500 [490]

HEY DEAR

given:- cost price = £108000

profit = 14%

sp=?

SP = (100+profit% / 100 )× cp

SP= (100 +14% /100)× £108000

SP= 114/100 × 108000

HOPE ITS HELPFULL

6 0

3 years ago

Read 2 more answers