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4 years ago

ESSENTIAL QUESTION CHECK-ININHow can you use a number line to find the sum of -4 and 6

Mathematics

2 answers:

olga2289 [7]4 years ago

5 0

Yes the sum of -4 and 6 is 2

Stella [2.4K]4 years ago

3 0

Start from -4 and since its adding jump up 6 times up the number line and you get 2.
Hope it helps! Mark as brainliest!

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Bob bought a broken motor scooter, repaired it, and sold the scooter for $130. That was $50 less than 1.5 times what he paid for

FromTheMoon [43]

Answer: $120

Step-by-step explanation:

Assume the original price is x.

He sold the scooter for $130 and this was $50 less than 1.5 times what he paid for it.

Relevant formula is therefore:

1.5x - 50 = 130

1.5x = 130 + 50

x = 180/1.5

x = $120

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3 years ago

Jerry cycles a 36-mile loop every day for two weeks. What is the total

Semmy [17]

The answer is: 18 miles.

: Hope this helps :)

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3 years ago

Betsy can clean a/b of the house in an hour. How long will it take her to clean the whole house?

vagabundo [1.1K]

Answer:

$b/a\ hours$

Step-by-step explanation:

we know that

Betsy can clean a/b of the house in an hour

The whole house (100%) correspond to the number 1

using proportion

Find out how long will it take her to clean the whole house

$\frac{(a/b)}{1}=\frac{1}{x} \\ \\x=1/(a/b)\\ \\x=b/a\ hours$

4 0

3 years ago

PLZ PLZ PLZ ANSWER QUICK! WILL GIVE BRAINIEST! LOTS OF POINTS!

V125BC [204]

Answer:

b < 11 = The board is shorter than 11 cm

b > 11 = The box contain more than 11 blocks

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b > 12 = The building taller than 12 m

Hope this helped ;)

4 0

3 years ago

Read 2 more answers

For what value of k will the lines x+2y=0, 3x-4y-10=0 and 5x+ky-7=0 are concurrent?

konstantin123 [22]

Answer:

After solve the equations we get value of k=3

Step-by-step explanation:

We need to find value of k for which the lines x+2y=0, 3x-4y-10=0 and 5x+ky-7=0 are concurrent.

If the lines are concurrent, they pass through same point.

Let:

$x+2y=0--eq(1)\\ 3x-4y-10=0--eq(2)\\ 5x+ky-7=0--eq(3)$

First solving equation 1 and 2 to find values of x and y

From eq(1) we find value of x and put it in eq(2)

$From \ eq(1) x+2y=0\\x=-2y\\Put x=-2y \ in \ eq(2)\\3x-4y-10=0\\3(-2y)-4y-10=0 \\-6y-4y=10\\-10y=10\\y=\frac{10}{-10}\\y=-1$

After solving we get value of y=-1

Now putting in eq(1) to get value of x

$x+2y=0\\x+2(-1)=0\\x-2=0\\x=2$

So, Value of x= 2

Now put value of x=2 and y=-1 into eq(3) to find value of k

$5x+ky-7=0\\5(2)+k(-1)-7=0\\10-k-7=0\\-k+3=0\\-k=-3\\k=3$

So, After solve the equations we get value of k=3

4 0

3 years ago