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2 years ago

10

Evaluate the expression when a= 2 and c=-4. -a +5c

1 answer:

-Dominant- [34]2 years ago

4 0

The answer would be 18

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Applying properties of Exponents In Exercise, use the properties of exponents to simplify the expression.

Nastasia [14]

Answer:

(a) $4^7$

(b) $7^6$

(c) $\dfrac{1}{16}$

(d) $3^{4}$

Step-by-step explanation:

We need to simplify the given expressions.

(a)

Consider the given expression is

$(4^5)(4^2)$

Using the property of exponent, we get

$=4^{5+2}$ $[\because a^ma^n=a^{m+n}]$

$=4^7$

(b)

Consider the given expression is

$(7^2)^3$

Using the property of exponent, we get

$=7^{2\times 3}$ $[\because (a^m)^n=a^{mn}]$

$=7^6$

(c)

Consider the given expression is

$2^{-4}$

Using the property of exponent, we get

$=\dfrac{1}{2^{4}}$ $[\because a^{-n}=\dfrac{1}{a^n}]$

$=\dfrac{1}{16}$

(d)

Consider the given expression is

$\dfrac{3^8}{3^4}$

Using the property of exponent, we get

$=3^{8-4}$ $[\because \dfrac{a^m}{a^n}=a^{m-n}]$

$=3^{4}$

6 0

3 years ago

8x−5x+4−x=Ax+B

yawa3891 [41]

Answer:

A = 2

B = 4

Step-by-step explanation:

To get an infinite number of solutions, both lines should be the same.

This means

A1x+ B1 = A2x + B2

So,

8x−5x+4−x=Ax+B

2x +4 = Ax +B

With this, we know the value of the coefficients

A = 2

B = 4

5 0

3 years ago

BET YOU CANT SOLVE THIS ONE......✋

MakcuM [25]

Umm, where's the question?????

4 0

3 years ago

Read 2 more answers

For the problem 135 ÷ 5, draw two different ways to break apart the array. Use the Distributive Property to write products for e

mihalych1998 [28]

We can't use the distributive property for this sum

3 0

3 years ago

Based on histogram above what is the average number of hours worked by 20 salesperson in company G

kiruha [24]

Answer:

$Average = 38$

Step-by-step explanation:

Given

The attached histogram

Required

The average work hours by 20 salespeople

First, we get the total hours worked as follows:

$Hours = 3 * 30 + 5 * 34 + 9 * 40 + 2 * 45 + 1 * 50$

$Hours = 760$

Divide by number of salespeople

$Average = Hours/n$

$Average = 760/20$

$Average = 38$

3 0

2 years ago