3 years ago

Use the function below to find f-4).

Mathematics

1 answer:

Semmy [17]3 years ago

4 0

Answer:

-8

Step-by-step explanation:

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3x + y - z= -6<br> 2x - y + 2z = 8<br> 4x + y - 3z = -21

Flauer [41]

Answer:

x=-1

y=4

z=7

Step-by-step explanation:

3x + y - z= -6(1)

2x - y + 2z = 8(2)

4x + y - 3z = -21(3)

(1)+(2): 5x+z=2(4)

(2)+(3): 6x-z=-13(5)

(4)+(5): 11x=-11

x=-1

so z=2-5x=7

y=-6-3x+z=4

8 0

3 years ago

Find the area of the figure.

11111nata11111 [884]

Answer:

180 sq.cm

Step-by-step explanation:

A = 10 x 10 + 16 x 5 x 1/2 x 2

A = 100 + 16 x 5

A = 100 + 80

A = 180 square cm

Hope that helps!

8 0

3 years ago

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The figure below shows a rectangular window

Alexxx [7]

Where is the figureeeee??

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3 years ago

king's sporting goods have two bikes on sale one cost 89.98 and another cost 99.99 what is difference in the price of these two

timurjin [86]

99.99 minus 89.98 equals 10.01

3 0

4 years ago

on a deposit of $4,000 that earns 8% compound interest compounded annually how much will you have after 2 years

NikAS [45]

$\bf ~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$4000\\ r=rate\to 8\%\to \frac{8}{100}\dotfill &0.08\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{annually, thus once} \end{array}\dotfill &1\\ t=years\dotfill &2 \end{cases} \\\\\\ A=4000\left(1+\frac{0.08}{1}\right)^{1\cdot 2}\implies A=4000(1.08)^2\implies A=4665.6$

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3 years ago