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3 years ago

Someone please help me with this!!

Mathematics

1 answer:

Paraphin [41]3 years ago

3 0

PEMDAS tells us to use multiplication and division before addition and subtraction.

-5(8) ÷ 10 - 14 ÷ 7 - (-2)(3)

-40 ÷ 10 - 2 - -6

-4 - 2 + 6 two negatives make a positive so - - 6 = + 6

-6 +6

Answer: 0

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Refer to the figure below to complete the following problem.

IRINA_888 [86]

Answer:

Step-by-step explanation:

5x-7=3x+ll

5x=3x+18

2x/2=18/2

x =9

5 x 9 -7 = 36

3 x 9 + 11=36

m D =36

3 0

3 years ago

An object at the top of a building with height 110 feet is thrown upward with an initial speed of 23 ft/s. Find its position z(t

alina1380 [7]

Answer:

Step-by-step explanation:

Given

Height of building is $h=110\ ft$

Initial upward velocity $u=23\ ft/s$

height of object is given by

$z(t)=ut+\frac{1}{2}gt^2$

but building is already at a height of 110 ft so z(t) must be given by

$Z(t)=ut+\frac{1}{2}(-g)t^2+110$

$Z(t)=23\times t-\frac{1}{2}\times 9.8\times t^2$

$Z(t)=-16t^2+23t+110$

Time when it hits is given by when Z(t)=0[/tex]

$-16t^2+23t+110=0$

$t=\frac{-23\pm \sqrt{(23)^2-4\times (-16)\times 110}}{2\times (-16)}$

$t=\frac{-23\pm 87}{-32}$

$t=3.43\ s$

6 0

4 years ago

An expression is given.

Katyanochek1 [597]

9514 1404 393

Answer:

Step-by-step explanation:

Maybe you want to evaluate ...

16 - 14 ÷ 2 + (3 +2)²

The parentheses are evaluated first.

16 -14÷2 +5²

Then the exponential term.

16 -14÷2 +25

The division is evaluated next.

16 -7 +25

Finally, the sum is evaluated.

= 9 +25

= 34

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Your calculator can do this arithmetic for you.

5 0

3 years ago

A given polygon has an area of 42 square feet. If the polygon is enlarged by a linear scale factor of 5, what is the area of the

Fittoniya [83]

Answer:

1050 ft²

Step-by-step explanation:

Enlarging the polygon by a factor of 5 has the effect of increasing the area by a factor of 5², that is 25

new area = 25 × 42 = 1050 ft²

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3 years ago

Is 5*3^x equal to 15x

umka2103 [35]

Answer:

NO DEAR . PLS MARK IT AS BRAINLIEST

Step-by-step explanation:

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3 years ago