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vodka [1.7K]
3 years ago
10

What value for x will make the equation true? -3 (7x - 5) = 87 + 3x

Mathematics
2 answers:
Gennadij [26K]3 years ago
7 0

Answer:

x=-3

Step-by-step explanation:

follow the PEMDAS method then see if the 2 equation equal each other after plugging in the x.

ruslelena [56]3 years ago
3 0

Answer:

x = - 3

Step-by-step explanation:

Given

- 3(7x - 5) = 87 + 3x ← distribute parenthesis on left side

- 21x + 15 = 87 + 3x ( subtract 3x from both sides )

- 24x = 72 ( divide both sides by - 24 )

x = - 3

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I NEED HELP ASAP!
vladimir2022 [97]

Using a geometric series, it is found that he swims 1897 yards in the first week.

In a geometric series, the quotient between consecutive terms is always the same, and it is called common ratio q.

The general equation of a geometric series is given by:

a_n = a_1q^{n-1}

In which a_1 is the first term.

The sum of the first n terms is given by:

S_{n} = \frac{a_1(1 - q^n)}{1 - q}

In this problem:

  • 200 yards on the first day, thus a_1 = 200.
  • Each day, the distance increases by 10%, since 100% + 10% = 110% = 1.1, q = 1.1.
  • First week is first 7 days, thus n = 7

Then:

S_{n} = \frac{a_1(1 - q^n)}{1 - q}

S_{7} = \frac{200(1 - 1.1^7)}{1 - 1.1}

S_{7} = 1897

He swims 1897 yards in the first week.

A similar problem is given at brainly.com/question/23711475

8 0
2 years ago
What is 8 3/5 times 8 3/5
olga_2 [115]
8 (3/5) = (43/5)
So the problem becomes what does
(43/5) * (43/5) equal?

= 1,849 / 25
=73 + (24/25)


8 0
3 years ago
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Simplify. Leave your answer as a fraction.
ryzh [129]

Answer:

3/4, 6/8

Step-by-step explanation:

12/4 is 3. 16/4 is 4, repeat for the other one with the number 3

3 0
3 years ago
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Let W be part of the solid sphere of radius 4, centered at the origin, that lies above the plane z = 2. Set up an integral in cy
andriy [413]

Answer:

V = ∫∫∫rdrdθdz integrating from z = 2 to z = 4, r = 0 to √(16 - z²) and θ = 0 to 2π

Step-by-step explanation:

Since we have the radius of the sphere R = 4, we have R² = r² + z² where r = radius of cylinder in z-plane and z = height² of cylinder.

So, r = √(R² - z²)

r = √(4² - z²)

r = √(16 - z²)

Since the region is above the plane z = 2, we integrate z from z = 2 to z = R = 4

Our volume integral in cylindrical coordinates is thus

V = ∫∫∫rdrdθdz integrating from z = 2 to z = 4, r = 0 to √(16 - z²) and θ = 0 to 2π

4 0
2 years ago
How much money would u get from $521 a second in 19 minutes
iris [78.8K]

We <u>get $593</u><u>,</u><u>940</u>

Answer:

Solution Given:

1 second = $ 521

19 minutes=19*60=1140 seconds

1140 seconds =$521*1140 =<u>$593,940</u>

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2 years ago
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