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3 years ago

I have a F in this class may someone help me..?

Mathematics

2 answers:

Bess [88]3 years ago

5 0

Answer:

x = -10

Step-by-step explanation:

9 x -10 = -90

34kurt3 years ago

4 0

So if 9x is equal to -90, that would mean that x is a negative number.

9x=-90

-90/9= -10

Check:

-10 times 9= -90

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You will receive $15000 I’m two years when you graduate. You plan to invest this at an annual interest rate of 6.5 percent. How

Crank

You will have $24 824.94 eight years from now.

The formula for the future value (FV) of her investment is

FV =C(1 + r)^n

where C = her initial cash

r = the interest rate

n = the number of years

FV = $15 000(1.065)^8 = $24 824.94

7 0

3 years ago

Find the angle θ between u = 〈6, –5〉 and v = 〈11, 8〉.

nexus9112 [7]

Step-by-step explanation:

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3 0

3 years ago

Read 2 more answers

547% of what number is 366.49

Rom4ik [11]

Answer:

Step-by-step explanation:

To solve this question ( that is to know the number), we must interpret the statement mathematically. Let the unknown number be T then,

547% of T = 366.49

547 * T/100 = 366.49

547T = 36646

T = 36649/547

= 67

It means that 547% of 67 gives 366.49

7 0

3 years ago

Two percent of Jennies skin cells were burned when she escaped from a fire. If

andreev551 [17]

$1.813*10^{12}$ cells of Jennies skin were not burned.

Step-by-step explanation:

Given,

Burned skin cells = $3.7*10^{10}$

This represents 2% of total skin cells.

Let,

x represents the total number of skin cells.

2% of x = $3.7*10^{10}$

$\frac{2}{100}x=3.7*10^{10}\\\\0.02x=3.7*10^{10}$

Dividing both sides by 0.02

$\frac{0.02x}{0.02}=\frac{3.7*10^{10}}{0.02}\\\\x=1.85*10^{12}$

Number of not burned cells = Total - burned

Number of not burned cells = $1.85*10^{12}-3.7*10^{10}$

Number of not burned cells = $1.813*10^{12}$

$1.813*10^{12}$ cells of Jennies skin were not burned.

Keywords: percentage, division

Learn more about division at:

#LearnwithBrainly

5 0

4 years ago

Read 2 more answers

Lucy is tiling her bathroom. She buys white and blue tiles in the ratio 13:2.Blue tiles cost £2.80 while white tiles cost £2.35.

krok68 [10]

Answer:

* Lucy spent £289.2 on tiles *

Step-by-step explanation:

We know that the tiles are present in a 13 to 2 ratio ( 13 : 2 ) so if there are 16 blue tiles that she buys, the number of red tiles bought should be represented the following -

$\frac{13}{2}$ = $\frac{x}{16}$ ... now this is only assuming that the 13 : 2 ratio is meant by white : blue tiles. Let's solve through cross - multiplication,

13 $*$ 16 = 2 $x$ ,

208 = 2 $x$ ,

$x$ = 104 white tiles

So if there are 104 white tiles, and 16 blue tiles, we can determine the total amount Lucy spent on tiles by associating the cost to the type of tile,

£2.80 $*$ 16 = £44.8,

£2.35 $*$ 104 = £244.4,

Total Amount Lucy Spent on Tiles = £44.8 + £244.4 = £289.2

8 0

3 years ago