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andreyandreev [35.5K]
3 years ago
15

Five times the difference of twice a number and nine is negative five. Find the number.

Mathematics
2 answers:
Ilya [14]3 years ago
4 0

Answer:

x = 4

Step-by-step explanation:

Step 1: Write out the expression

5(2x - 9) = -5

Step 2: Solve for <em>x</em>

10x - 45 = -5

10x = 40

x = 4

Talja [164]3 years ago
3 0

Answer:

X=4 ANS.

PROOF:

5(2*4-11)=-15

5(8-11)=-15

5*-3=-15

-15=-15

Step-by-step explanation:

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Modeling Exponential Growth and Decay In Exercises 119 and 120, Find the exponential function
Lubov Fominskaja [6]

Answer:

There is no exponential function passing through (1,1) and (5,5).

Step-by-step explanation:

We have the following exponential function

y = Ce^{kt}

The function passes through these two points:

(1,1): This means that when t = 1, y = 1

(5,5): This means that when t = 5, y = 5.

So

(1,1)

y = Ce^{kt}

Ce^{k} = 1

e^{k} = \frac{1}{C}

(5,5)

y = Ce^{kt}

5Ce^{k} = 1

Ce^{k} = \frac{1}{5}

From above, we have that:

e^{k} = \frac{1}{C}

C\frac{1}{C} = \frac{1}{5}

1 = \frac{1}{5}

1 cannot be equal to 1/5, so this is wrong.

This means that there is no exponential function passing through (1,1) and (5,5).

5 0
3 years ago
Fiona has a box of chocolates the box contains 60 chocolates she eats 1/5 of the chocolates she gives 32 chocolates away what is
natta225 [31]

Answer:

23

Step-by-step explanation:

got this answer bc bc i told myself 1/5 is one whole ad took 5 out of it and then subtracted 5-60 and then got 55 and after that i subtracted 55-32 and thats how i got my answer of 23

5 0
3 years ago
Two angles are complementary. The measure of ∠ABC is x° and the measure of ∠DBC is (3x + 10)°. What is the value of x?
beks73 [17]
42.5 I think

3x+10+x=180
4x=170
170/4=x
X=42.5
5 0
2 years ago
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Bingel [31]

Multiply 800 to 4/5 to see how much they make per day.

800 * 4/5 = 640

So, they make 640 fishing reels per day.

Multiply this to 30:

640 * 30 = 19,200

So they will make 19,200 fishing reels in 30 days.

This is not enough for the order.

8 0
2 years ago
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I need help please provide with the correct answer. it is due at 11:59 pm
expeople1 [14]
I think the answer is d
6 0
2 years ago
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