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QveST [7]
3 years ago
6

Which expression is equivalent to 20+64 a.4+(16+60)b.4+(5+16)c.4+(16+60)d.4(5+16)​

Mathematics
1 answer:
UNO [17]3 years ago
8 0

Answer:

D. 4 (5 + 16)

Step-by-step explanation:

20 + 64 =<em> </em><u><em>84</em></u>

To solve this problem we have to simplify each of the expressions in the answer column:

<u>A. = 80</u>

(16 + 60 = 76) giving us

4 + 76 = 80

<u>B. = 25</u>

(5 + 16 = 21)

4 + 21 = 25

<u>C. = 80</u>

(16 + 60 = 76)

4 + 76 = 80

<em><u>D. = 84</u></em>

(5 + 16 = 21)

4 x 21 = <em>84</em>

So The correct option is <u>D. 4 (5 + 16)</u>

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Need help. Anything is appreciated!
Lynna [10]

First attatchment:

1. Given

2. Definition of a parrallelogram

3. Transitive

4. Parts of line FE and AB

5. Opposite sides of a parallelogram are parallel.

You want to switch those last two because you're using what you want to prove to prove something before you've proved it, which is fallacious.

SECOND ATTATCHMENT:

In a parallelogram, opposite angles are equal and same side interior angles add up to 180.We have 2x+60+x+30=180 which means 3x+90=180 so x=30.Since x is 30 then angle to is 60 which means that angle A is 60, not 30.

THIRD ATTATCHMENT:

This is just the triangle midpoint theorem. SM is parallel to RU not VS.

FOURTH ATTATCHMENT:

Angle X and angle F are corresponding angles, so they are actually equal. You want Angle G and Angle F becuase they are same side interior angles.

FIFTH ATTATCHMENT:

this is correct

3 0
3 years ago
Find the area of the circle. (Take pi 22/7
Vikki [24]

Answer:

1386cm^2.

Step-by-step explanation:

radius of circle=21cm

area of circle(a)=?

we know,

A=pi r^2

=22/7×(21)^2

=1386cm^2

6 0
3 years ago
Point A, located at (-11,17) on the coordinate plane, is reflected over the x-axis to form point B. Then point B is reflected ov
zalisa [80]

Answer:

  B = (-11, -17)

  C = (11, -17)

Step-by-step explanation:

Reflection over the x-axis is accomplished by changing the sign of the y-coordinate:

  (x, y) ⇒ (x, -y) . . . . . reflection over x-axis

Reflection over the y-axis is accomplished by changing the sign of the x-coordinate:

  (x, y) ⇒ (-x, y) . . . . . reflection over the y-axis

__

  B = (-11, -17)

  C = (11, -17)

__

<em>Check</em>

Reflection over both axes negates both coordinates. It is equivalent to reflection over the origin, or rotation 180°.

  A(-11, 17) ⇒ C(11, -17) . . . . . both coordinates change sign

3 0
3 years ago
Someone with the right answer help me
andre [41]

Answer:

46 degrees.

Step-by-step explanation:

Sin(angle) = 5/7. Using a calculator, this angle is thus 45.6, or approximately 46 degrees.

5 0
3 years ago
1) The domain for f(x) and g(x) is the set of all real numbers. Let f(x) = 2x-3 and g(x) = 3x+8. Find f(x) multiplied by g(x). 2
Elena-2011 [213]

Answer:

1)6x^2+7x-24

2) x-4

3)  f(-3)=-14 g(-3)=2 f(-3)/g(-3)=-7 and p(-3)=-3-4=-7

f(-11)=90 g(-11)=-6 f(-11)/g(-11)=-15 and p(-11)=-11-4=-15

4)f'(x)=(x-7)/3

Step-by-step explanation:

1) f(x)=2x-3 g(x)=3x+8

f(x)*g(x)=m(x)=(2x-3)(3x+8)=6x^2+16x-9x-24=6x^2+7x-24

2) f(x)=x^2+x-20 g(x)=x+5

f(x)/g(x)=p(x)=(x^2+x-20)/(x+5)=> by finding the roots of f(x) we obtain =

(x-4)(x+5)/(x+5)--->f(x)/g(x)=p(x)=(x-4)

3) f(-3)=-14 g(-3)=2 f(-3)/g(-3)=-7 and p(-3)=-3-4=-7

f(-11)=90 g(-11)=-6 f(-11)/g(-11)=-15 and p(-11)=-11-4=-15

4) If a function f(x) is mapping x to y, then the inverse function of f(x) maps y back x

y=3x+7

(y-7)/3=x=--> f'(x)=(x-7)/3

3 0
4 years ago
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