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3 years ago

Question 4 help please

Mathematics

2 answers:

IgorC [24]3 years ago

6 0

I would say about 40%

denis23 [38]3 years ago

3 0

I agree 40% sounds right

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Nancy and her sister went to the store together. After the store, Nancy walked 2 blocks west to get a coffee and her sister walk

Dima020 [189]

Answer:

5 blocks

Step-by-step explanation:

8 0

3 years ago

(972.41+1,620) x 2/100=

fomenos

(972.41 + 1,620) = 2592.41

2592.41 × $\frac{2}{100}$ = 51.8482

So, that means that your answer would have to be: 51.8482

Just change " $\frac{2}{100}$ " to 0.02 and by the way lineup the decimals and do P.E.M.D.A.S

:)

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3 years ago

If a hot dog cost $2.99 and 7% tax how much is one hot dog

kicyunya [14]

Since the hotdog is $2.99 with 7% tax increased by hotdog then
$2.99+0.07(2.99)
$2.99+$0.21
=$3.2

4 0

3 years ago

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For what value of k are the roots of the quadratic equation kx (x-2)+6=0 equal?

ser-zykov [4K]

Answer:

$\boxed{\sf k=6}$

Step-by-step explanation:

$\sf kx (x-2)+6=0$

Expand brackets.

$\sf kx^2 -2kx+6=0$

This is in quadratic form.

$\sf ax^2 +bx+c=0$

Since this is for equal roots:

$\sf b^2 -4ac=0$

$\sf a=k\\b=-2k\\c=6$

$\sf (-2k)^2 -4(k)(6)=0$

$\sf 4k^2-24k=0$

$\sf 4k(k-6)=0$

$\sf 4k=0\\k=0$

$\sf k-6=0\\k=6$

Plug k as 0 to check.

$\sf \sf 0x^2 -2(0)x+6=0\\6=0$

False.

So that means k must equal 6.

3 0

3 years ago

A jet moving at constant speed traveled 6,600 km in 3 hours. What was the speed of the jet?

DanielleElmas [232]

Answer:

The speed of the jet is $2,200\frac{km}{h}$

Step-by-step explanation:

The speed traveled by the jet can be found using the relationship between distance and time. Because the problem gives the values for distance and time, they must be replaced in the equation and in this way the requested speed will be found.

1. Write the general equation for the speed:

$Speed=\frac{Distance}{Time}$

2. Replace the values of distance and time on the general equation for the speed and make the mathematical operations:

$Speed=\frac{6,600km}{3hours}$

$Speed=2,200\frac{km}{h}$

Therefore the speed of the jet is $2,200\frac{km}{h}$

3 0

3 years ago

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