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3 years ago

What is answer to this equation 7x-4=2

Mathematics

2 answers:

Lina20 [59]3 years ago

4 0

X=6 because you take x as one you have 7-1=6 so 6-4=2

Inga [223]3 years ago

3 0

7x=2+4
7x=6
X=6/7 ans
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The formula A equals =P left parenthesis 1 plus r right parenthesis squared (1+r)2 gives the amount A in dollars that P dollars

vlabodo [156]

The interest rate is 3.5%.

EXPLANATION

We substitute the given values into the formula;

$A=P(1+\frac{r}{100})^t$

to obtain

$6427.35=6000(1+\frac{r}{100})^2$

We divide through by 6000 to obtain,

$\frac{6427.35}{6000}=(1+\frac{r}{100})^2$

This implies that,

$1.071225=(1+\frac{r}{100})^2$

We take the square root of both sides,

$\sqrt{1.071225}=(1+\frac{r}{100})$

This gives us,

$1.035=(1+\frac{r}{100})$

Add -1 to both sides of the equation to obtain

$0.035=\frac{r}{100}$

Multiply through by 100 to obtain;

$r=3.5$ %

$Therefore the rate is 3.5%$

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3 years ago

What is the volume of a sphere that has a diameter of 31?

MatroZZZ [7]

V≈15598.53
d Diameter =31

6 0

3 years ago

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Given ΔABC, m∠A = 120°, b = 13 cm, and c= 15 cm. Find the triangle's area. Round to the nearest tenth.

zzz [600]

Refer to the diagram shown below.

m∠A = 120°
b = 13 cm
c = 15 cm

From the Law of Sines, the area of the triangle is
Area = (1/2)*b*c*sin(A)
= 0.5*13*15*sin(120°)
= 84.4375 cm²

Answer: 84.4 cm² (nearest tenth)

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3 years ago

Find the value of x in the triangle shown below

tino4ka555 [31]

Answer:

Step-by-step explanation:

This is an isosceles triangle since two sides have length 10. The angles opposite the congruent sides are congruent. There is an angle measuring 116 deg, and two angles measuring x. The sum of the measures of the angles of a triangle is 180.

x + x + 116 = 180

2x + 116 = 180

2x = 64

x = 32

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3 years ago

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Solve 1/f=1/a+1/b for f

Alika [10]

Answer:

f=ab/a+b

Step-by-step explanation:

Let's solve for f.

1/f=1/a+1/b

3 0

3 years ago