3 years ago

Can u please help my friend with this she really needs it

Mathematics

1 answer:

Gnoma [55]3 years ago

3 0

Answer:

Step-by-step explanation:

The answer is D

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A country population in 1992 was 39 million in 1997 it was 42 million estimate the population in 2009 using the exponential grow

Stells [14]

76 Im pretty sure but im not 100 percent sure i remember this

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4 years ago

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Lin runs 5 laps around a track in 6 minutes. c. If Lin runs 21 laps at the same rate, how long does it take her?

horrorfan [7]

126 because if you multiple 21 and 6 it’s gives you 126

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3 years ago

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The student council was preparing for the wellness sale. The members divided each type of the donated items equally onto plates.

Mumz [18]

Answer:

The greatest number of items on each plate is 7

Step-by-step explanation:

Given

$Celery = 63$

$Cucumber = 14$

$Carrot = 35$

Required

Determine the greatest number of items on each plate

To do this, we simply calculate the GCF of 63, 14 and 35

$63 =3 * 3 * 7$

$14 = 2 * 7$

$35 = 5* 7$

The GCF is:

$GCF = 7$

Hence:

The greatest number of items on each plate is 7

8 0

3 years ago

Solve for x. Make sure to show all your work. {9}{x}={2}{6}

zhannawk [14.2K]

Answer:

Mixed Number: x = 1 1/3

Improper Fraction: x = 12/9

Step-by-step explanation:

9x=2(6)

9x=12

9x/9=12/9

x=1 1/3

Hope this helps.

4 0

3 years ago

What are the values of a and b

makvit [3.9K]

Answer:

$\large\boxed{B.\ a=8,\ b=4\sqrt5}$

Step-by-step explanation:

We have three similar triangles:

$\triangle ABC\sim\triangle DBA\sim\triangle DAC$

therefore the sides are in proportion:

$\dfrac{AD}{CD}=\dfrac{BD}{AD}$

We have AD = a, CD = 16 and BD = 4. Substitute:

$\dfrac{a}{16}=\dfrac{4}{a}$ <em>cross multiply</em>

$(a)(a)=(16)(4)\\\\a^2=64\to a=\sqrt{64}\\\\a=8$

and other proportion:

$\dfrac{AB}{BC}=\dfrac{BD}{AB}$

We have AB = b, BC = 16 + 4 = 20 and BD = 4. Substitute:

$\dfrac{b}{20}=\dfrac{4}{b}$ <em>cross multiply</em>

$(b)(b)=(20)(4)\\\\b^2=80\to b=\sqrt{80}\\\\b=\sqrt{16\cdot5}\\\\b=\sqrt{16}\cdot\sqrt{5}\\\\b=4\sqrt{5}$

3 0

3 years ago