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3 years ago

To solve 35-19, jack used 35-20 what did he do next

Mathematics

2 answers:

Kay [80]3 years ago

8 0

Then he got a sum of -1 (or negative one)

ladessa [460]3 years ago

3 0

He added one to his answer! 35-19 is 16, 35-20 is 15

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Mrs. Zamir wants to buy 8 protractors and some erasers for her classroom.She has $30.00. If protractors cost $2.65 each, how muc

goblinko [34]

Mrs. Zamir has $\fbox{\bf\$8.8}$ left to buy eraser.

Further explanation :

Multiplication is a mathematical operation such that two real numbers are performed in such a way that they derive a third number called product.

For example:

There are two numbers $4{\text{ and 5}}$ then multiply both the numbers as,

$4\times5=20$

Therefore, 20 is the product of 4 and 5.

It is given that Mrs. Zamir wants to buy 8 protractors and some erasers for her classroom.

She has total $\$30$ .

If the price of the protractor is $\$2.65$ each.

Therefore, she spends total amount of money on protractor can be calculated by multiplying 8 protractors by 2.65 as,

$\begin{aligned}n&=8\times2.65\\&=21.2\\\end{aligned}$

Thus, she spends $\$21.2$ on protractors.

Now, she has total $\$30$ and $\$21.2$ she spends on protractors.

Therefore, she left with the amount $r$ as,

$\begin{aligned}r&=30-21.2\\&=8.8\\\end{aligned}$

Therefore, she has $\fbox{\bf\$8.8}$ amount left for eraser.

Learn more :

1. Problem on the whole numbers are positive integers brainly.com/question/1852063.

2. Problem on the adding and simplifying the numbers brainly.com/question/894273.

3. Problem on the general form of the equation of the circle brainly.com/question/1506955.

Answer details:

Grade: Junior school

Subject: Mathematics

Chapter: Multiplication and division

Keywords: Mrs. Zamir, protractors, erasers, cost, multiplication, division, addition, subtraction, real numbers, decimal numbers.

8 0

3 years ago

Read 2 more answers

Answer fast! I will give brainiest

RideAnS [48]

Answer:

x= -5, 2

Step-by-step explanation:

5x=3x-10. 4x=2x+4

5x-3x= -10. 4x-2x=4

2x= -10. 2x=4

x= -5. x=2

5 0

3 years ago

At 3 p.m. an oil tanker traveling west in the ocean at 14 kilometers per hour passes the same spot as a luxury liner that arrive

schepotkina [342]

<span>N(t) = 16t ; Distance north of spot at time t for the liner. W(t) = 14(t-1); Distance west of spot at time t for the tanker. d(t) = sqrt(N(t)^2 + W(t)^2) ; Distance between both ships at time t. Let's create a function to express the distance north of the spot that the luxury liner is at time t. We will use the value t as representing "the number of hours since 2 p.m." Since the liner was there at exactly 2 p.m. and is traveling 16 kph, the function is N(t) = 16t Now let's create the same function for how far west the tanker is from the spot. Since the tanker was there at 3 p.m. (t = 1 by the definition above), the function is slightly more complicated, and is W(t) = 14(t-1) The distance between the 2 ships is easy. Just use the pythagorean theorem. So d(t) = sqrt(N(t)^2 + W(t)^2) If you want the function for d() to be expanded, just substitute the other functions, so d(t) = sqrt((16t)^2 + (14(t-1))^2) d(t) = sqrt(256t^2 + (14t-14)^2) d(t) = sqrt(256t^2 + (196t^2 - 392t + 196) ) d(t) = sqrt(452t^2 - 392t + 196)</span>

3 0

3 years ago

Quadrilateral ABCD is a rhombus. Given tha m

Tems11 [23]

Answer:

m<EDA=35°

m<DAE=35 diagonal bisect it

Step-by-step explanation:

m<AED=180-2×35=110°(by sum of interior angle of the triangle)

m<BCE=mDAE=35° alternate angle

4 0

3 years ago

Read 2 more answers

Im really bad at the functions stuff so- yk help

atroni [7]

Answer:Isolate the variable by dividing each side by factors that don't contain the variable.

w =-3u/2+2

4 0

2 years ago