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2 years ago

I'll mark you as the brainiest if you get this correct thx xxx This homework is due tomorrow thx for your help

Mathematics

2 answers:

scoray [572]2 years ago

5 0

Answer:

4 times

Step-by-step explanation:

450/30=15

50/15=3.3

round up to 4 times

Ierofanga [76]2 years ago

3 0

Step-by-step explanation:

Aight, lemme give it a shot

so ya got 50 boxes and each box weighs 30 kg

so in total ya go 50×30=1500kg weight

and on the other hand ya are allowed to carry the maximum of 450 kg

now check it

1500÷450=3.3

450×3=1320kg

the van can be full for three drives and

1500–1320=150kg

and it has to be driven to the shop with ⅓ of maximum weight only once

so it'll be 4 drives

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3x - 4 = -31 What is x?

SSSSS [86.1K]

3x-4=-31
+4 +4
3x=27
X=9

Hope this helps

5 0

3 years ago

Read 2 more answers

Factor 4x(w + 1) + 5y(w + 1).

Firdavs [7]

Factor w+1 out of 4x(w+1)+5y(w+1).

(w+1)(4x+5y)

plzmark me as brainliest :)

4 0

3 years ago

A construction company wants to build an auditorium on a trapezium shaped plot measuring 410m2. One of the parallel sides of the

Assoli18 [71]

Answer:

other parallel side is 23m

Step-by-step explanation:

Let's assume other parallel sides as 'x'

One of the parallel sides of the trapezium plot measure 18m

so, y=18

distance between the two parallel sides measure 20m

so, h=20

now, we can use area of trapezium formula

$A=\frac{1}{2}\times h \times (x+y)$

now, we can plug values

$A=\frac{1}{2}\times 20 \times (x+18)$

we can set A=410

and then we can solve for x

$410=\frac{1}{2}\times 20 \times (x+18)$

$10\left(x+18\right)=410$

$x+18=41$

$x=23$

6 0

3 years ago

Extreme cold and hot temperatures are known to affect the operation of electronic components. Winter is approaching and you are

Musya8 [376]

Answer:

A 95% confidence interval for the true mean minimum temperature that will damage an iPod is between 2.55°F and 7.45°F

Test statistic(Z) = 2.31

P-value = 0.0104

Step-by-step explanation:

Step 1

Null hypothesis: The average damaging temperature of nine iPods is 5°F

Alternate hypothesis: The average damaging temperature of nine iPods differs from 5°F

Step 2

Mean=5°F, Sd=3, df=n-1=9-1=8

The t-value corresponding to 8 degrees of freedom and 95% confidence level (5% significance level) is 2.306

Confidence Interval(CI) = (mean + or - t×sd/√n)

CI = (5 + 2.306×3/√8) = 5 + 6.918/2.828= 5+2.45=7.45°F

CI = (5 - 2.306×3/√8) = 5-2.45 = 2.55°F

Z = (sample mean - population mean)/(sd÷√n) = (5-2.55)/(3÷√8) = 2.45/1.061 = 2.31

Step 3

Using the standard distribution table, the cumulative area to the left of Z = 2.31 is 0.9896

P-value = 1 - 0.9896 = 0.0104

Step 4

Conclusion: A 95% confidence interval for the true mean minimum temperature that will damage an iPod is between 2.55°F and 7.45°F

7 0

3 years ago

Identify the expression equivalent to 16x + 24y

tatuchka [14]

Correct answer is 3: 8 (2x + 3y)

3 0

2 years ago

Read 2 more answers