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m_a_m_a [10]
3 years ago
15

Determine the value of y, if x is -7 y=∣x∣-5

Mathematics
1 answer:
trasher [3.6K]3 years ago
3 0

Answer:

y = 2

Step-by-step explanation:

y = |x| - 5

|?| means an absolute value of a number

in this case x = -7 so the absolute value for -7 would be 7

y = 7 - 5

y = 2

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Nadia is a stockbroker. She earns 12% commission each week. Last week, she sold $5400 worth of stocks. How much did she make las
Inga [223]

Answer:

a). Nadia made a total of $825 last week in commission sales

b). The total amount Nadia in commission in 2011=$42,900

Step-by-step explanation:

Step 1

Express the amount in commission she earns from her sales as follows;

C=S×r

where;

C=commission earned

S=total value of stock sales

r=commission rate

In our case;

C=unknown

S=$7,500

r=11%=11/100=0.11

replacing;

C=11% of 7,500

C=(11/100)×7,500

C=0.11×7,500=825

Nadia made a total of $825 last week in commission sales

b). To express the total amount she made in 2011, we derive the formula below;

Total amount (2011)=Average weekly commission×number of weeks in 2011

where;

Average weekly commission=$825

number of weeks in 2011=52

replacing;

Total amount (2011)=(825×52)=42,900

The total amount Nadia in commission in 2011=$42,900

6 0
3 years ago
Graph of Parent Functions
Tanya [424]

Answer:

A parent function is the simplest function of a family of functions. of this form is y = x2. The simplest parabola is y = x2, whose graph is shown at the right. The graph passes through the origin (0,0), and is contained in Quadrants I and II.

Hope it helped u if yes mark me BRAINLIEST pzllzllzl plzz plzzz

Tysmm

6 0
3 years ago
Read 2 more answers
The estimate of the population proportion should be within plus or minus 0.02, with a 90% level of confidence. The best estimate
Rudiy27

Answer:

The sample size required is 910.

Step-by-step explanation:

The confidence interval for population proportion is:

CI=\hat p\pm z_{ \alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }

The margin of error is:

MOE=z_{ \alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }

Given:

\hat p = 0.16\\MOE= 0.02\\Confidence\ level =0.90

The critical value of <em>z</em> for 90% confidence level is:

z_{\alpha /2}=z_{0.10/2}=z_{0.05}=1.645 *Use a standard normal table.

Compute the sample size required as follows:

MOE=z_{ \alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }\\0.02=1.645\times \sqrt{\frac{0.16(1-0.16)}{n} }\\n=\frac{(1.645)^{2}\times 0.16\times (1-0.16)}{(0.02)^{2}} \\=909.2244\\\approx910

Thus, the sample size required is 910.

5 0
3 years ago
Which functions have removable discontinuities (holes)? Check all of the boxes that apply.
Naya [18.7K]

Answer:

a b d

Step-by-step explanation:

4 0
3 years ago
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Find the Slope and the y- intercept for 5x+5y=-40
zheka24 [161]

Answer:

y-intercept= (0,-8)

slope= -1

Step-by-step explanation:

3 0
3 years ago
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