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2 years ago

NEED NOW PLEASE..........

Mathematics

1 answer:

Arada [10]2 years ago

8 0

Answer: C. -12 - 3 + 9

Step-by-step explanation:

-12 because the fish are 12 m <em>below</em> the ocean.

-3 because the fish swim <em>down</em>.

+9 because the fish swim <em>up</em>.

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Alicia bought a notebook and several erasers at the student store. The graph shows the relationship between the total cost of he

melomori [17]

<h3><u>Answer:</u></h3>

Option: C is the correct answer.

$ 1.50 is the cost of 1 eraser.

<h3><u>Step-by-step explanation:</u></h3>

Alicia bought a notebook and several erasers at the student store.

Let the cost of 1 eraser=$ x.

Now from the scatter plot we could see that when Alicia did not bought any eraser then her total cost =$ 2.

That means cost of a notebook=$ 2.

Now when she buys a notebook and two eraser then she pays=$ 5.

i.e.

Total cost=cost of notebook+ 2× cost of 1 eraser

Total cost=cost of notebook+2×x

i.e.

5=2+2x

⇒ 2x=5-2

⇒ 2x=3

⇒ x=1.5

Hence, cost of one eraser is:

$ 1.50

6 0

3 years ago

Read 2 more answers

A rectangular flower garden in Samantha's backyard has 220 feet around its edge. The width of the garden is 50 feet. What is the

Ede4ka [16]

Answer: 60 ft

Step-by-step explanation:

Given

The perimeter of the garden is $220\ ft$

The width of the garden is $50\ ft$

Suppose the length of the garden is $x$

Perimeter is the sum of the lengths of the sides

$\Rightarrow 220=2(x+50)\\\Rightarrow 110=x+50\\\Rightarrow x=60\ ft$

So, the length of the garden is $60\ ft$

4 0

3 years ago

What is a reasonable domain and range for this function

Sidana [21]

Answer:

plz describe whole question!!

Step-by-step explanation:

your question is incomplete

4 0

2 years ago

Read 2 more answers

Nazerhy deposits $8,000 in a certificate of deposit. the annual interest rate is 6%, and the interest will be compounded quarter

Bess [88]

The worth of the certificate in 10 years would be $14,512.15

Compound Interest and Its Formula

Compound interest is the type of interest based investment that causes initially modest sums of money to eventually increase to big sums. The formula for compound interest is given by,

$A = P(1+\frac{r}{n})^{nt}$

Here,

A is the final worth of the investment

P denotes the Principal amount of money that is invested

r denotes the rate of the compound interest

t denotes the time period in years

n denotes the number of times interest is compounded in one year

Given Information

P = $8,000

r = 6% = 0.06

n = 4 (∵ Compounded quarterly)

t = 10 years

Solving for A

Substituting the values of P, r, n, and t in the above mentioned formula of compound interest, we get,

$A = 8,000(1+\frac{0.06}{4})^{4*10}$

$A = 8,000(\frac{4.06}{4})^{40}$

$A = 8,000* 1.8140184$

$A = 14,512.14726$

Rounding the answer to two decimal places, we get,

$A = 14,512.15$

Therefore, Nazerhy would get $14,512.15 after 10 years.

Learn more about compound interest here:

brainly.com/question/26457073

#SPJ4

7 0

2 years ago

A nutrition laboratory wants to construct a 95% confidence interval for the mean sodium content of "reduced sodium" hot dogs. A

tatuchka [14]

Answer:

n > 96

Therefore, the number of samples should be more than 96 for the width of their confidence interval to be no more than 10mg

Step-by-step explanation:

Given;

Standard deviation r= 25mg

Width of confidence interval w= 10mg

Confidence interval of 95%

Margin of error E = w/2 = 10mg/2 = 5mg

Z at 95% = 1.96

Margin of error E = Z(r/√n)

n = (Z×r/E)^2

n = (1.96 × 25/5)^2

n = (9.8)^2

n = 96.04

n > 96

Therefore, the number of samples should be more than 96 for the width of their confidence interval to be no more than 10mg

6 0

3 years ago