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2 years ago

8

Ming-Li spent $15 at the movies. She then earned $30 babysitting . She spent $12 at the bookstore. She now has $18 left . How mu

ch money did Ming-Li have to begin with?

2 answers:

Musya8 [376]2 years ago

8 0

Ming-Li had $75 to begin with. Just add all the numbers

Marta_Voda [28]2 years ago

3 0

Answer:

$15

Step-by-step explanation:

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A manageress earned £24,500 last year. This year she earns £25,235.

Korolek [52]

Answer:

Step-by-step explanation:

245000 last year

This year 25235

(y2 - y1) / y1)*100 = your percentage change

(where y1=start value and y2=end value)

(( £25.235 - £24.500) / £24.500) * 100 = 0 %

There ain't no percentage change as there needs to be a bigger difference between the two numbers plus u should use the formula

7 0

1 year ago

A law firm charges a client according to the function f(x)=4(x+2) , where x represents the number of hours spent on the client’s

Zigmanuir [339]

Answer:

The graph in the attached figure

Step-by-step explanation:

Let

x ---> the number of hours spent on the client’s case each week

f(x) ----> the total charge that week in hundreds of dollars

we have

$f(x)=4(x+2)$

distribute

$f(x)=4x+8$

This is the equation of the line in slope intercept form

where

The slope or unit rate is

$m=4$

The y-intercept or initial value is

$b=8$

To graph the line we need minimum two points

Find the x-intercept

For f(x)=0

$0=4x+8\\4x=-8\\x=-2$

The x-intercept is the point (-2,0)

so

we have

the points (-2,0) and (0,8)

To graph the line, plot the intercepts, connect them and join the points

The graph in the attached figure

Remember that the value of x and the value of f(x) cannot be a negative number

3 0

2 years ago

The perimeter of a rectangle is 13cm and its width is 11/4. find its length.

enyata [817]

Perimeter = 2 length + 2 width

P = 2(l) + 2(11/4)

$13 = 2l +2* \frac{11}{4}$

$13 = 2l + \frac{2}{1} * \frac{11}{4}$

$13 = 2l + \frac{22}{4}$ (subtract 22/4 from each side)

$13 -\frac{22}{4} = 2l$

$13 -\frac{11}{2} = 2l$

$\frac{26}{2} -\frac{11}{2} = 2l$

$\frac{15}{2}} = 2l$

$7.5 = 2l$ (divide each side by 2)

7.5 ÷ 2 = l

3.75 = l

The answer is 3.75 or $3 \frac{3}{4}$

6 0

2 years ago

How many ounces of pure nickel must be added to 150 ounces of alloy 70% pure to make an alloy which is 85% pure?

galben [10]

Answer:

150 oz.

Step-by-step explanation:

There are already 150 ounces of alloy of nickel.

Of this 150 oz, 70% is pure i.e. nickel content = 150(0.7) = 105 oz

Now available is

Nickel Other metals

105 45

Let x oz of pure nickel is added.

Then new alloy will have 105+x oz nickel in total of 150+x oz.

Percentage pure = $\frac{105+x}{150+x} =85%$

Simplify to get

$\frac{105+x}{150+x} =\frac{85}{100} \\\\Cross multiply:\\85(150+x) =100(105+x)\\12750+85x =10500+100x\\100x-85x = 12750-10500\\15x = 2250\\x = 150$

Hence answer is 150 oz should be added.

6 0

1 year ago

Apply the distributive property to factor out the greatest common factor of all three terms. 24c+36d+18

mihalych1998 [28]

Answer:

$GCF = 6$

Step-by-step explanation:

$24c+36d+18$

$6(4c)+6(6d)+6(3)$

$6(4c+6d+3)$

7 0

1 year ago