3 years ago

What is twice of 2^30 using exponents

Mathematics

1 answer:

coldgirl [10]3 years ago

7 0

Answer:

2^31.

Step-by-step explanation:

2 * 2^30

= 2^1 * 2^30

= 2^31. (Law of indices)

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Someone help me with this ples with steps

SSSSS [86.1K]

Answer:

$x=\frac{21}{4}$

$y=\frac{21}{2}$

Step-by-step explanation:

equation (1): $\frac{1}{2} (2x+y)=\frac{21}{2}$

equation (2): y=2x

solve the system by substitution

step1: sub (2x) for y in equation 1:

$\frac{1}{2} (2x+y)=\frac{21}{2}$

$\frac{1}{2} (2x+2x)=\frac{21}{2}$

step2: simplify the expression:

$\frac{1}{2} (4x)=\frac{21}{2}$

$2x=\frac{21}{2}$

(divide by 2 for both sides)

$x=\frac{21}{4}$

To find the value for y sub 21/4 for x in equation 2:

y=2x

y=2×(21/4)

$y=\frac{21}{2}$

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Nadusha1986 [10]

It is 153/250. message me if u need any help. lol

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2 years ago

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Triangle DBC is equilateral,<br>AB = AC. Work out the size of angle x. <br><br><br>Pls asap

allochka39001 [22]

Answer:

x = 21º

Step-by-step explanation:

∆ ABC is isosceles therefor

Angles B and C are congruent

(180 - 18)/2 = 162/2 = 81º

------------------

∆ BCD is equilateral therefor all angles are 60º

---------------------------

x = = 81 - 60

x = 21º

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How do I simplify complex fractions?

timama [110]

Answer:

Find the Least Common Denominator (LCD) of all the denominators in the complex fractions.

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The vertices of a triangle are A(-2,2) B(9,0) and C(1,-4) if the triangle is triangle is a right triangle , which vertex is the

dangina [55]

Answer:

C *possibly*

Step-by-step explanation:

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3 years ago