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Vlad1618 [11]
3 years ago
10

What is the correct solution to the equation?

Mathematics
2 answers:
RSB [31]3 years ago
5 0

Answer:

B

Step-by-step explanation:

4(7-3)=16

7-3=4

4x4=16

Please mark brainliest!

Rom4ik [11]3 years ago
4 0

Answer:

B. 7

Step-by-step explanation:

4(x-3)=16 so you have to multiply the entire equation by 4 since it is outside parenthesis

4x-12=16 then you have to add 12 to both sides to isolate 4x

   +12  +12

4x=28 then you have to divide both sides by  to just have x

4/4=1  28/4=7 (the 1 doesn't mater because 1x=x and x=1x)

x=7 is your answer

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7. Triangles CDE and RST are similar triangles. What is
andreyandreev [35.5K]

Answer:

CD = 25 ft

Step-by-step explanation:

\triangle CDE \sim \triangle RST

\therefore \frac{CD}{20}=\frac{40}{32}

(Corresponding sides of similar triangles are in proportion)

\therefore \frac{CD}{20}=\frac{5}{4}

\therefore CD = \frac{5}{\cancel 4}\times \cancel {20} \:\:\blue{\bold{5}}

\therefore CD = 5\times 5

\therefore CD = 25\: ft

6 0
3 years ago
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Daniela invested a total of $50,000, some in a certificate of deposit (CD) and the remainder in bonds. The amount invested in bo
LekaFEV [45]

Answer:

The amount invested in bonds = 35,000

The amount invested in CD = 15,000.

Step-by-step explanation:

The total amount that Daniela invested is $50,000, this means if we call the amount invested in bonds b, and the amount invested in CD d, then we have:

b+d=50,000 this says the total amount Daniela invested is $50,000.

And since the amount invested in bonds b is $5,000 more than twice the amount Daniela put into the CD, we have:

b=5,000+2d.

Thus, we have two equations and two unknowns b and d:

(1). b+d=50,000

(2). b=5,000+2d,

and we solve this system by substituting b from the second equation into the first:

b+d=50,000\\5,000+2d+d=50,000\\3d=45,000\\\\\boxed{d=15,000}

or, the amount invested in CD is $15,000.

With the value of d in hand, we now solve for b from equation(2):

b=5,000+2d\\b=5000+2(15,000)\\\boxed{b=35,000}

or, the amount invested in bonds is $35,000.

4 0
3 years ago
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ladessa [460]

Answer:

9

Step-by-step explanation:

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2 years ago
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Callie has 83 postcard
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Any second part or anything else to look at?
3 0
3 years ago
R = sec(θ) − 2cos(θ), where -π/2 < θ < π/2
Alex

Answer:

  y = (x/(1-x))√(1-x²)

Step-by-step explanation:

The equation can be translated to rectangular coordinates by using the relationships between polar and rectangular coordinates:

  x = r·cos(θ)

  y = r·sin(θ)

  x² +y² = r²

__

  r = sec(θ) -2cos(θ)

  r·cos(θ) = 1 -2cos(θ)² . . . . . . . . multiply by cos(θ)

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  (x² +y²)x = x² +y² -2x² . . . . . . . substitute rectangular relations

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__

The attached graph shows the equivalence of the polar and rectangular forms.

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