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3 years ago

3.-8= (2.8) - 8 is it true or false

Mathematics

1 answer:

wel3 years ago

7 0

Answer: false

Step-by-step explanation:

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Mai biked 5 1/4 miles today, and Noah biked 2 1/2 miles. How many times the length of Noah’s bike ride was Mai’s bike ride?

OlgaM077 [116]

Answer:

The length of Mai's bike ride was 2.1 times the length of Noah's ride.

Step-by-step explanation:

Mai biked 5 1/4 miles today

So he biked, in miles:

$5 + \frac{1}{4} = \frac{5*4 + 1}{4} = \frac{20+1}{4} = \frac{21}{4}$

Noah biked 2 1/2 miles.

So, in miles, he biked:

$2 + \frac{1}{2} = \frac{2*2 + 1}{2} = \frac{4+1}{2} = \frac{5}{2}$

How many times the length of Noah’s bike ride was Mai’s bike ride?

We divide the Mai distance by Noah's distance. In a division of fractions, we multiply the numerator by the inverse of the denominator. So

$\frac{\frac{21}{4}}{\frac{5}{2}} = \frac{21}{4} \times {2}{5} = \frac{21*1}{2*5} = \frac{21}{10} = 2.1$

The length of Mai's bike ride was 2.1 times the length of Noah's ride.

5 0

3 years ago

Identify the vertex and axis of symmetry.<br> f(x) = 3(x+7)²-5

Verizon [17]

Answer:

haiii i can only solve for the vertex...

Step-by-step explanation:

so to find the vertex you have to make it to

y - h = a(x - k)^2

i think

(you could also just make it y = a(x - k)^2 + h but i like the second one better)

soo

y + 5 = 3(x + 7)^2

the vertex is

(-7, -5)

and ummm i think the axis for the axis of symmetry .ss

x = 2a/b but im not sure

5 0

2 years ago

Read 2 more answers

Explain why this relationship is not proportional

murzikaleks [220]

Bc its not equal it needs to be equal

6 0

3 years ago

Find the product of 2x^4(3x^2 + 4x + 1)

lozanna [386]

Answer:

$2 {x}^{4} (3 {x}^{2} + 4x + 1) \\=6{x}^{(4+2)}+8{x}^{(4+1)}+2{x}^{(4+0)}\\ = \boxed{6 {x}^{6} + 8 {x}^{5} + 2 {x}^{4} }$

<h3><u>6x⁶+8x⁵+2x⁴</u> is the right answer.</h3>

8 0

3 years ago

What is the answer to this question ........................ do

posledela

I think the answer is 16

8 0

3 years ago