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2 years ago

Hello can you please help me with one or two please

Mathematics

1 answer:

Zolol [24]2 years ago

6 0

For question number 2, the answer is A 6x+9

Explanation:

$\begin{gathered} 3(2x+3) \\ \text{Clearing the brackets, we get} \\ 6x+9 \end{gathered}$

Question Number 19:

$\begin{gathered} 8x-2x+4 \\ 6x+4 \\ \text{Factorizing, we get} \\ 2(3x+2) \end{gathered}$

So, the correct answer for question number 19 is 6x + 4.

You might be interested in

The mean salary of actuaries is LaTeX: \mu=\$100,000????=$100,000 and the standard deviation is LaTeX: \sigma=\$36,730????=$36,7

krek1111 [17]

Answer:

The lower limit of 95% confidence interval is 99002.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = $100,000

Sample mean, $\bar{x}$ = $111,000

Sample size, n = 36

Alpha, α = 0.05

Population standard deviation, σ = $36,730

First, we design the null and the alternate hypothesis

$H_{0}: \mu = \$100,000\\H_A: \mu \neq \$100,000$

We have to find the lower limit of the 95% confidence interval.

95% Confidence interval:

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

Putting the values, we get,

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

$111000 \pm 1.96(\dfrac{36730}{\sqrt{36}} )\\\\ = 111000 \pm 11998.4667 \\= (99001.5333,122998.4667)\\ \approx (99002,122999)$

The lower limit of 95% confidence interval is 99002.

6 0

4 years ago

Global temperatures are generally increasing. The average temp for Orlando is 73 degrees Fahrenheit. If temps are rising at an a

Nezavi [6.7K]

The multiplier is 1 + (percentage increase) = 1.0013.

_____
It make no sense to talk about percentage changes in temperature. Just sayin'.

6 0

4 years ago

Flaky pastry can be made using flour and fat in the ratio 4 : 3. Jake makes some flaky pastry using 90 grams of fat. What weight

lubasha [3.4K]

Answer:

He use 120 grams of flour.

Step-by-step explanation:

Given:

Flaky pastry can be made using flour and fat in the ratio 4 : 3. Jake makes some flaky pastry using 90 grams of fat.

Now, to find the weight of flour he use in making flaky pastry.

Let the weight of flour be $x.$

Weight of fat = 90 grams.

The ratio of flour and fat used in making flaky pastry is 4 : 3.

As, 4 is equivalent to 3.

Thus, $x$ is equivalent to 90.

Now, to solve using cross multiplication method:

$\frac{4}{3} =\frac{x}{90} \\\\By\ cross\ multiplying\ we\ get:\\\\360=3x\\\\Dividing\ both\ sides\ by\ 3\ we\ get:\\\\120=x\\\\x=120\ grams.$

Therefore, he use 120 grams of flour.

4 0

3 years ago

Perimeter with radius 14

nevsk [136]

$360^o-150^o=210^o\\\\\dfrac{210^o}{360^o}=\dfrac{7}{12}$

$P_{LQM}=\dfrac{7}{12}\cdot2\pi\cdot14=\dfrac{7}{3}\pi\cdot7=\dfrac{49\pi}{3}\ cm$

$P_{QRP}=\dfrac{1}{2}\cdot14\pi=7\pi\ cm$

$P_F=\dfrac{49\pi}{3}+7\pi+3\cdot14\approx\dfrac{49}{3}\cdot\dfrac{22}{7}+7\cdot\dfrac{22}{7}+42=166\dfrac{2}{3}\ cm^2$

6 0

3 years ago

Kelly purchased a toaster for $110. She made a down payment of 25% and financed the rest for 6 months with payments of $24.33. F

Arlecino [84]

Answer:

Down payment =$ 27.5

Total 6 month installment payment

= $145.98

Total payment for toaster= $173.48

Step-by-step explanation:

Supposed price of the toaster= $110

Down payment of 25% was made

Down payment= 25/100 * 110

Down payment=0.25*110

Down payment =$ 27.5

For 6 month she made installmental payment of $24.33

Total installmental payment

= 24.33 * 6

= $145.98

Then total payment made for the toaster = 145.98 + 27.5

= $173.48

6 0

3 years ago