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3 years ago

Can you please explain to me how I would solve this problem? Can you please explain/and show all the steps?

Mathematics

1 answer:

Lena [83]3 years ago

7 0

22 = z + (-9) Switch the sides
z = 22 - (-9) Solve
z = 31 So, z = 31

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Mr. Vander Heydens tie costs 3 times as much as Mr bentelys tie. Together they spent $128. What what the price of each of their

Artyom0805 [142]

128 / 4 =32

Mr Bentleys tie is $32
Mr. Vander Heydens is $96

3 0

4 years ago

Lee reads for 3/4 hour in the morning and 2/4 hour in the afternoon. how much longer does lee read in the morning than in the af

olganol [36]

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3 0

3 years ago

The ratio of two number is 4:7 and their hcf is 6 .find their lcm

Alona [7]

168

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3 0

3 years ago

Find the slope of a line perpendicular to 2x-y-16

Alekssandra [29.7K]

put the equation 2x - y = 16 in the form of y = mx + c

2x - y = 16

2x = 16 + y

y = 2x - 16

the slope of this line is 2. the slope of a line perpendicular to it would be the negative reciprocal of 2. in other words, it would multiply with 2 to give -1.

you can form this equation with that info

2x = -1

x = -1/2

you can flip and change the sign (numerator) of 2/1

2/1

= -1/2

6 0

3 years ago

Natalie earned $200 in interest and 30 months with a beginning balance of $1040. What was her interest rate?

rjkz [21]

The interest rate is 7.69%

Step-by-step explanation:

Given

Interest = $200

Time = t = 30 months

Time will be converted into years as the rate is applied yearly

So,

1 year = 12 months

30 months = 30/12 years = 2.5 years

Principal amount = $1040

The formula for interest is:

$I = P*r*t$

Putting the values

$200 = 1040 * r * 2.5\\200 = 2600r\\r = \frac{200}{2600}\\r = 0.076923$

Converting into percentage:

r = 7.6923

Rounding off to nearest hundredth

r = 7.69%

Hence,

The interest rate is 7.69%

Keywords: Interest, percentage

Learn more about interest at:

#LearnwithBrainly

5 0

3 years ago