Please help i’ll mark!

Pierre found a new store where he hopes to save

fgiga [73]

Your first equation is 4x + 7y= 32, the x’s representing the brushes and the y’s the tubes of paint. Our second equation is 6x+8y=43. What I did is I multiplied the first equation by 1.5 so that it turns into 6x+10.5y=48. Then I subtracted the second equation from the first, canceling out the x’s and leaving us with 2.5y=5. Then divided and got y=2. We then go back to any of the original equations and plug it in to get the x’s.
6x+8(2)=43. We get 6x+16=43. We subtract and are left with 6x=27 and then x=4.5. Then plug both of them in to a different equation to double check. You could also use substitution by isolating one of the variables in one equation and then plugging it in to the other one.

5 0

3 years ago

Sara and Lane share a 30-ounce box of cereal. By the end of the week, Sara has eaten 1 10 of the box, and Lane has eaten 2 5 of

natulia [17]

Answer:

12 ounces left on the box

Step-by-step explanation:

we will add all of the eaten and we will subtract from the all ounces. I think it is like that

5 0

3 years ago

The product of which expression contains 4 decimal places

oee [108]

Answer:

14.2 x 0.784

Step-by-step explanation:

5 0

3 years ago

the dimensions of a smaller rectangle are 3ft by 9ft the dimensions of a larger rectangle are 5ft by 15ft find the ratio of the

Alexxandr [17]

The ratio of the area of the smaller rectangle to the area of the larger

rectangle is $\frac{9}{25}$

Step-by-step explanation:

The formula of the area of a rectangle is A = l × w, where l and w

are its dimensions

The dimensions of a smaller rectangle are 3 ft by 9 ft
The dimensions of a larger rectangle are 5 ft by 15 ft

We want to find the ratio of the area of the smaller rectangle to

the area of the larger rectangle

∵ The dimensions of the smaller rectangle are 3 ft and 9 ft

∴ The area of the smaller rectangle = 3 × 9 = 27 feet²

∵ The dimensions of the larger rectangle are 5 ft and 15 ft

∴ The area of the smaller rectangle = 5 × 15 = 75 feet²

Let us find the ratio of the area of the smaller rectangle to the area

of the larger rectangle

→ smaller rectangle : larger rectangle

→ 27 : 75

Divide the both terms of the ratio by 3

→ 9 : 25

The two terms of the ratio do not divisible by any other number

∴ The simplest form of the ratio is 9 : 25

∴ The ratio of the area of the smaller rectangle to the area of the larger

rectangle = $\frac{9}{25}$

The ratio of the area of the smaller rectangle to the area of the larger

rectangle is $\frac{9}{25}$

Learn more:

You can learn more about the ratio in brainly.com/question/10781917

#LearnwithBrainly

7 0

3 years ago

Please help me with these four questions

Paraphin [41]

Answer:

23) 8

24)58

25)im guessing theyre both 90

Step-by-step explanation:

23)if ac=23 then 15-23=x

24) since it's a 90 degree angle the 32+x=90

and 90-32=58

7 0

3 years ago