Ask question

Ask question

All categories

3 years ago

5

Keirra’s mother gave her $7.50 to buy 8 spiral notebooks. With tax, the cost of each notebook is $1.05. Does Keirra have enough

money? Use compatible numbers and estimation to help you decide.

1 answer:

GuDViN [60]3 years ago

7 0

Answer:

No

Step-by-step explanation:

each notebook is $1.05 and the is $7.50

there is only enough for seven notebooks not eight.

You might be interested in

What is the answer to this math question

Vilka [71]

$(19 {b}^{3} + 16 {f}^{3} ) \times 2 {b}^{5} = 38 {b}^{8} + 32 {b}^{5} {f}^{3}$

8 0

3 years ago

Calculate the average rate of change of the function f(x) = 3x2 over the interval 1 ≤ x ≤ 5.

RideAnS [48]

Answer:

18

Step-by-step explanation:

The average rate of change of f(x) in the closed interval [ a, b ] is

$\frac{f(b)-f(a)}{b-a}$

here [ a, b ] = [ 1, 5 ]

f(b) = f(5) = 3 × 5² = 75

f(a) = f(1) = 3 × 1² = 3, hence

average rate of change = $\frac{75-3}{5-1}$ = $\frac{72}{4}$ = 18

5 0

3 years ago

Find the sum of all 11 terms of an AP whose middlemost terms is 30?

Bond [772]

Let the difference between consecutive terms be D. If the middle term is 30, then the term before it is 30-D, and the term after it is 30+D. So the sum of these three terms would be (30-D) + 30 + (30+D) = 3*30.

Extending this sum to include all 11 terms centered around 30, we see that any addition of D is canceled by a balanced subtraction, leaving you with 11 copies of 30. So the value of the sum is 11*30 = 330.

6 0

3 years ago

(-7/10) - 2/5<br> HELP!!

Juli2301 [7.4K]

Answer:

-11/10

Step-by-step explanation:

-7/10-2/5

-7/10-4/10

-11/10

3 0

3 years ago

Can anyone help me with this plz.

marshall27 [118]

Answer:

$5^{12}$

Step-by-step explanation:

Using the rule of exponents

$(a^m)^{n}$ ⇔ $a^{mn}$ , then

$(5^4)^{3}$ = $5^{4(3)}$ = $5^{12}$

6 0

3 years ago

Read 2 more answers