3 years ago

the length of a rectangle is 2 cm less than 7 times the width.the perimeter is 60 cm. find the width and length

Mathematics

2 answers:

Vladimir [108]3 years ago

8 0

4 and 26 are the width and length

Mnenie [13.5K]3 years ago

5 0

Width = 4
length = 26

You might be interested in

Each year, all final year students take a mathematics exam. It is hypothesized that the population mean score for this test is 8

drek231 [11]

Answer:

95% Confidence interval: (96.06,103.94)

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 85

Sample mean, $\bar{x}$ = 100

Sample size, n = 30

Alpha, α = 0.05

Population standard deviation, σ = 11

95% Confidence interval:

$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

$100 \pm 1.96(\frac{11}{\sqrt{30}} ) = 100 \pm 3.94= (96.06,103.94)$

(96.06,103.94) is the 95% confidence interval for the population mean test score.

8 0

3 years ago

Simplify: -1 | 2/3 - 4 | / 5/6

stealth61 [152]

Answer:

Step-by-step explanation:

$- 1 | \frac{2}{3} - 4| \div \frac{5}{6} \\ - 1 | \frac{2}{3} - \frac{4 \times 3}{1 \times 3} | \div \frac{5}{6} \\ - 1 | \frac{2 - 12}{3} | \div \frac{5}{6} \\ - 1 | \frac{ - 10}{3} | \div \frac{5}{6} \\ \frac{10}{3} \div \frac{5}{6} \\ \frac{10}{3} \times \frac{6}{5} \\ \frac{2}{1} \times \frac{2}{1} = 4$

3 0

2 years ago

Arnie is mixing red and yellow paint to make two different shades of orange. To make 1 cup of dark orange paint, he needs 7 ounc

nordsb [41]

Answer:

If this is how many ounces of yellow: 14oz

If this is how many ounses of red: 8oz

4 0

3 years ago

Derek bought a package of 8 tennis balls. The total weight of the tennis balls was 18 ounces. How much did each tennis ball weig

beks73 [17]

2.25 ounces...18/8=2.25

7 0

3 years ago

A number minus 3 is at least −5.

NikAS [45]

Answer:

x is at least -2

Step-by-step explanation:

6 0

3 years ago