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2 years ago

What is the value of r? 3/5 ( r - 7 ) = 1

Mathematics

2 answers:

gulaghasi [49]2 years ago

4 0

R = 26/ 3 im pretty sure

REY [17]2 years ago

3 0

Answer:

8.66666666667

Step-by-step explanation:

Step 1:

3/5 ( r - 7 ) = 1 Equation

Step 2:

3/5r - 4.2 = 1 Multiply

Step 3:

0.6r = 5.2 Add 4.2 on both sides

Step 4:

5.2 ÷ 0.6 Divide

Answer:

r = 8.66666666667

Hope This Helps :)

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the price of family dinner was $48.00 . A sales tax of 5% to the final bill. The family left a $10.08 tip. If the family include

tia_tia [17]

Answer:

20% tip

Step-by-step explanation:

Dinner: $48.00

Tax: 0.05($48.00) = $2.40

Total (final) bill before tip: $50.40

Tip: $10.08

Percentage tip was then $10.08 (100%) / $50.40 = 20%

The family left a 20% tip.

5 0

3 years ago

Adam invested $12,000 in a six-year CD that paid 7.1% interest, but later needed to withdraw $2,500 early. If the CD's penalty f

Neporo4naja [7]

Answer:

Step-by-step explanation:

The amount Adam invested in a six years CD was $12,000 was 7.1%

Adam made a withdrawal of $2500 early. The early withdrawal was worth eighteen months of interest on the amount withdrawn.

Monthly interest = 7.1% / 12

= 0.59%

The interest for 18 months will be

(7.1% /12)18

= 10.65%

The penalty for withdrawing early was 18 months worth the interest on the amount withdrawn

= 2500 * 10.65%

= 266.25

This means Adam needs to pay a penalty of $266.25 for withdrawing early

7 0

2 years ago

Please, I really need help-

posledela

<h3>Answer: 48</h3>

=====================================================

Explanation:

Triangle ABC is isosceles because AC = BC.

The angles opposite these congruent sides are angle ABC and angle BAC. These are the base angles.

For any isosceles triangle, the base angles are congruent.

Angle BAC = 69 degrees is given. So angle ABC = 69 as well.

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

The missing angle must add to the two other angles so that all three angles in a triangle add to 180

(angle ABC) + (angle BAC) + (angle BCA) = 180

69 + 69 + (angle BCA) = 180

138 + (angle BCA) = 180

angle BCA = 180-138

angle BCA = 42

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

Angle DCE is congruent to angle BCA because they are vertical angles.

Triangle DCE is a right triangle. The missing angle is 90-(angle BCA) = 90-42 = 48

angle EDC = 48 degrees

6 0

3 years ago

Read 2 more answers

Trinity collects rainwater in a cylinder rain barrel. The area of the base of the

Fittoniya [83]

Answer:

suggestions use algebra calculator or mathaway they will help u and give you the answer

8 0

2 years ago

Nadia is investigating rotations about the center of regular polygons that carry the regular polygon onto itself. She claims tha

GalinKa [24]

Answer:

$\theta_1 \ n\ \theta_2 = 120, 240$

Step-by-step explanation:

The question is incomplete, as the angles of rotation are not stated.

However, I will list the angles less than 360 degrees that will carry the hexagon and the nonagon onto itself

We have:

$Nonagon = 9\ sides$

$Hexagon = 6\ sides$

Divide 360 degrees by the number of sides in each angle, then find the multiples.

<u>Nonagon</u>

$\theta = \frac{360}{9} =40$

List the multiples of 40

$\theta_1 = 40, 80, 120, 160, 200, 240, 280, 320$

<u>Hexagon</u>

$\theta = \frac{360}{6} =60$

List the multiples of 60

$\theta_2 = 60, 120, 180, 240, 300$

List out the common angles

$\theta_1 = 40, 80, 120, 160, 200, 240, 280, 320$

$\theta_2 = 60, 120, 180, 240, 300$

$\theta_1 \ n\ \theta_2 = 120, 240$

This means that, only a rotation of $120, 240$ will lift both shapes onto themselves, when applied to both shapes.

The other angles will only work on one of the shapes, but not both at the same time.

7 0

2 years ago