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2 years ago

HELP ASAP PLEASE

Mathematics

1 answer:

gulaghasi [49]2 years ago

3 0

2. Answer: 35

Step-by-step explanation:

4x3 grid so 4!= 24 and 3!= 6 4+3=7 so 7! = 5040 now 7!/4!*3!=35.

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A typical marathon is 26.2 miles. Allan averages 12 kilometers per 1 hour when running in marathons. How long does it take for A

cluponka [151]

Answer:

3.5 hours

Step-by-step explanation:

Given: Distance= 26.2 miles

Speed= 12 km/h

First lets convert the unit of speed from kmh to mph.

Remember, 1 mile= 1.609 km

∴ For speed of 12 km/h= $\frac{12}{1.609}= 7.45\ mph$

Speed= 7.45 mph

Next, find time taken by Allan to complete a Marathon.

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

⇒ Time= $\frac{26.2}{7.45}$

∴ Time= 3.516 hours ≅ 3.5 h (nearest tenth)

∴ Allan took 3.5 hours to complete marathon.

8 0

4 years ago

Write the equation, in slope-intercept form, of the line that has a slope of 2 and passes through the point (1,3 ).

Serga [27]

Slope intercept form is $y = mx+b$

where $m$ is the slope
and $b$ is the y-intercept

they give us that the slope is 2
so our $m = 2$

then to find $b$ , we temporarily plug in the point they gave us for x and y

so $3 = 2(1) + b$
and solve for $b$
3 = 2 + b
1 = b
so our $b = 1$

put this together and we get
$y = 2x + 1$ as our answer

8 0

4 years ago

5. -[-2(x-4) - |1-3|] = -2x18

irina [24]

Solving the expression $-[-2(x-4) - |1-3|] = -2x18$ we get value of x: $x=\frac{3}{19}$

Step-by-step explanation:

We need to solve the equation $-[-2(x-4) - |1-3|] = -2x18$ and find value of x

Solving:

$-[-2(x-4) - |1-3|] = -2x18$

Multiply -2 with terms inside the bracket

$-[-2x+8 - |1-3|] = -2x18$

Solving |1-3| we get |-2|=2

$-[-2x+8 - 2] = -2x18$

$-[-2x+6] = -2x18$

Multiply (-) sign with terms inside the bracket

$+2x-6 = -2x18$

Multiply 2x with 18

$2x-6 = -36x$

Add 36x on both sdides

$2x-6+36x =0$

$38x-6 =0$

Add 6 on both sides:

$38x =6$

Divide both sides by 38

$x=\frac{6}{38}$

Simplifying:

$x=\frac{3}{19}$

So, Solving the expression $-[-2(x-4) - |1-3|] = -2x18$ we get value of x: $x=\frac{3}{19}$

Keywords: Solving Equations

Learn more about Solving Equations at:

#learnwithBrainly

3 0

4 years ago

Plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz answer!

Ann [662]

Answer:

The third one(-20+(n-1)*)

Step-by-step explanation:

It's correct because when you plug in one of the numbers in the list, it makes the equation equal. Example Below.

n=4

n=-20+(n-1)8

4=-20+(4-1)8

4=-20+3*8

4=-20+24

4=4

7 0

3 years ago

If mZ2 = 26, what is mZ16?

FrozenT [24]

9514 1404 393

Answer:

B. 26

Step-by-step explanation:

All acute angles in the figure are congruent. All obtuse angles in the figure are congruent. All of the even-numbered angles are acute and have the measure 26.

m∠16 = 26

5 0

3 years ago