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3 years ago

Select all radical expressions that are equivalent to 347. (3√4)7 (3√7)4 21−−√4 37−−√4 81−−√7 12−−√7

Mathematics

1 answer:

vichka [17]3 years ago

4 0

Answer:

can you add the answer choices please? thank you!

Step-by-step explanation:

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Evelyn went shopping with half of her monthly allowance. She spent $39.95 on a dress and 3/7 of the remainder on some accessorie

Gnoma [55]

Answer:

Evelyn monthly allowance is $187.

Step-by-step explanation:

Let the monthly allowance be 'x'.

Given:

Money taken with for shopping = $\frac{x}{2}$

Money spent of dress = $39.95

Also Given:

3/7 of the remainder on some accessories.

Money spent on accessories is equal to $\frac{3}{7}$ times Difference of monthly allowance and Money spent of dress.

framing in equation form we get;

Money spent on accessories = $\frac{3}{7}\times(\frac{x}{2}-39.95)$

Also Given:

Money left after shopping = $30.60

Now we know that;

Money taken with for shopping is equal to sum of Money spent of dress and Money spent on accessories and Money left after shopping.

framing in equation form we get;

$\frac{x}{2}=39.95+\frac{3}{7}(\frac{x}{2}-39.95)+30.60\\\\\frac{x}{2}=39.95+\frac{3x}{14}- 17.12 +30.60$

Combining like terms we get;

$\frac{x}{2}-\frac{3x}{14}=39.95-17.12+30.60\\\\\frac{x}{2}-\frac{3x}{14}= 53.43$

Now we will make denominator common using L.C.M

$\frac{x\times 7}{2\times7}-\frac{3x\times1}{14\times1}= 53.43\\\\\frac{7x}{14}-\frac{3x}{14}= 53.43\\\\\frac{7x-3x}{14}=53.43\\\\\frac{4x}{14}=53.43\\\\4x=53.43\times14\\\\x= \frac{53.43\times14}{4} = \$187$

Hence Evelyn monthly allowance is $187.

3 0

4 years ago

Page

horrorfan [7]

Answer:

Step-by-step explanation:

(-5,4)=since x coordinate is negative and y coordinate is positive it lies on 2 nd quadrant.

(4,-2)=x coordinate is positive and y coordinate is negative so it lies on 4 th quadrant

(7,2)=both x coordinate and y coordinate are positive so they lie in 1 st quadrant.

(-3,-7) =both x and y coordinate are negative so they lie on 3 nd quadrant

3 0

3 years ago

What number is 1/10 as great as 7962?

koban [17]

796.2 abhajdhhsgsgdh

5 0

3 years ago

State if the two triangles are congruent. if they are state how you know.

nlexa [21]

1) The triangles are congruent by SSS.

The two tick marks indicate two pairs of congruent sides; it is evident that the third side is congruent by the way the diagram is drawn - the bases of the triangles are together and appear to be the same length.

2) The triangles are congruent by SAS.

The two pairs of tick marks indicate congruent sides, and their included angles are congruent because they are vertical angles, and vertical angles are always congruent.

5 0

3 years ago

I need to increase the numbers of customers I talk to daily by 20% how many customers do I need to talk to if I talk to a averag

nata0808 [166]

Answer:

77 approx

Step-by-step explanation:

Given data

Number of customers talked to per hour= 8

Hence for 8 hours(a day) the number of customers talked to = 8*8= 64

We want to first find 20% of 64

=20/100*64

=0.2*64

=12.8

Hence the number of customers will be

=12.8+64

=76.8

=77 approx

6 0

3 years ago