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3 years ago

How is the expression 7^-4 written using a positive exponent?

Mathematics

1 answer:

Pavlova-9 [17]3 years ago

4 0

It would be written as a fraction to make the exponent negative put it over one : 1/7^4

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It takes 1 gallon of paint to cover 18 fence boards. Assuming you can only buy whole gallons of paint at the store, how many gal

ankoles [38]

Answer:

9 gal

Step-by-step explanation:

150/18

8.333333333333334

if we round that to the greater whole gallon we get 9 gallons

5 0

3 years ago

Nata [24]

Answer: 15, -8

Step-by-step explanation:

$u_2=7\\u_2=u_1+r\\u_3=u_1+2r\\u_4=u_1+3r\\\\u_1+u_2+u_3+u_4=4u_1+6r=12\\u_1+r=7\\\\$

$\left \{ \begin {array} {ccc|c|c}u_1+r&=&7&-4&-6\\4u_1+6r&=&12&1&1\\\end {array} \right.\\\\\\\left \{ \begin {array} {ccc}2r&=&-16\\-2u_1&=&-30\\\end {array} \right.\\\\\\\left \{ \begin {array} {ccc}r&=&-8\\u_1&=&15\\\end {array} \right.\\\\\\Proof:\\u_1=15\\u_2=7\\u_3=-1\\u_4=-9\\sum=12\\$

6 0

3 years ago

Find x please and FAST!!!

Vsevolod [243]

Answer:

Step-by-step explanation:

Angle ZYW is congruent to angle YWX, so the 3 angles must add to 180.

(3x - 5) + 90 + 2x = 180

5x + 85 = 180

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4 0

3 years ago

(math problem in picture)

In-s [12.5K]

Answer:

the answer of the question is b. 8.2 mm

5 0

3 years ago

Read 2 more answers

What is the solution set of the quadratic inequality f(x) greater than or equal to 0

stellarik [79]

ANSWER

{ $x | x \in \: R$ }

EXPLANATION

From the graph, the given quadratic inequality is

${(x + 3)}^{2} \geqslant 0$

We can see that the corresponding quadratic function is a perfect square.

Since the graph opens upwards and it is always above the x-axis, any real number you plug into the inequality, the result is greater than or equal to zero.

Hence the solution set is

{ $x | x \in \: R$ }

The correct answer is A

3 0

3 years ago