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3 years ago

Write an algebraic expression for 15 decreased by twice a number

Mathematics

2 answers:

horsena [70]3 years ago

6 0

15- (y2) should get you the answer... Hopefully.<span />

Daniel [21]3 years ago

5 0

The expression would be:
15-2x

Hope this helps!
-Benjamin

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Can you pllleeeassseee help me out?

Andru [333]

1) Debbie has $93 saved up to buy a PS4 on Black Friday. On Black Friday the PS4 will cost $150 dollars, if Debbie babysits and earn two dollars everyday she babysits, how many days left does she have until she can buy the PS4?

2n+93=150

2n=150-93

2n=57

n= $\frac{57}{2}$

2) What does P equal? P stands for the amount of apples needed for a pie sale. We also need to find Q, which is how much peaches we'll need as well, because it is a peach and apple pie sale.

$\frac{p}{10}= \frac{7}{q}$

$p=\frac{7}{q} *10$

$p=\frac{70}{q}$

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

$\frac{p}{10}= \frac{7}{q}$

$\frac{p}{10}q=7$

$\frac{pq}{10} =7$

pq=7*10

pq=70

$q=\frac{70}{p}$

Hope this helps, have a BLESSED and wonderful day! :-)

-Cutipatutie ☺❀❤

8 0

2 years ago

How many 3/4 -foot pieces of yarn can be cut from 24 feet of yarn?

12345 [234]

Answer get 6 4 feet piece and you can get

and 8 3 feet pieces

3 0

2 years ago

12,000 g____1.2 kg A greater than B less than C equal to

serious [3.7K]

12000 g would be equal to 12 kg not 1.2 kg so the answer has to be A) greater than.

Answer: A) GREATER THAN

7 0

3 years ago

Julio bought tables and chairs for his restaurant. He bought 16 total items and spent $1800. Each table cost $150 and each chair

uysha [10]

Answer:

He bought 6 chairs and 10 tables.

Step-by-step explanation:

x+y = 16

he spent = $1800

1 chair = $50

y chairs = $50y

1 table = $150

x chairs = $150x

so, 150x+50y = 1800

we got two equations :

x+ y = 16

150x+50y = 1800

Using. substitution method,

x+y = 16

so, x = 16-y

Now

150x+50y =1800

or, 150(16-y) + 50y = 1800

or, 2400-150y+50y = 1800

or, 2400-1800 = 150y-50y

or, 600=100y

so, y = 6

now,

x+y = 16

or, x + 6 = 16

so, x = 10

4 0

2 years ago

Find the 7th term of the geometric sequence whose common ratio is 1/3 and whose first term is 5.

wolverine [178]

Answer:

$t_7 =\frac{5}{729}$

Step-by-step explanation:

We are given that:

First term (a) = 5

common ratio (r) = $\frac{1}{3}$

The nth term of a geometric sequence is given as:

$t_n =ar^{n-1} \\\therefore t_7 =5\times \bigg(\frac{1}{3}\bigg) ^{7-1} \\\therefore t_7 =5\times \bigg(\frac{1}{3}\bigg) ^{6} \\\therefore t_7 =5\times \bigg(\frac{1}{3}\bigg) ^{6} \\\therefore t_7 =5\times \frac{1}{729}\\\\\huge\red{\boxed{\therefore t_7 =\frac{5}{729} }}$

8 0

3 years ago