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3 years ago

Pls help meee!!

Mathematics

1 answer:

maksim [4K]3 years ago

8 0

Answer:

7*6-x

42-x

Step-by-step explanation:

decrease means subtraction,

product means multiplication

let x be the number you are decreasing by.

I am not really sure how to explain this, but here I go.

you take away x from the number that equals 6*7.

6*7 is 42 and you take away x from that, you get 42-x

or if you want to leave it unsimplified,

6*7-x

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Help fast! 50 points!<br> How is 7.85 irrational, explain the steps.

Rufina [12.5K]

An irrational number cannot be expressed as a ratio between two numbers so putting a decimal makes it irrational

3 0

3 years ago

A marching band is performing in a rectangular arrangement, with a width of $w$ people. The length consists of seven less people

Norma-Jean [14]

Answer:

There are 120 people in the marching band.

Step-by-step explanation:

Let no. of people in the band be x.

In the first rectangular arrangement,

Width of rectangle ( $w_{1}$ ) = w people.

Length of rectangle ( $l_{1}$ ) = (w-7) people

Therefore,

no. of people in the band(x) = Area of the rectangle = Product of width and Length

x = width $\times$ length

x = $w\times (w-7)$ (equation 1);

In the second rectangular arrangement,

Width of rectangle ( $w_{2}$ ) = (w-3) people.

Length of rectangle ( $l_{2}$ ) = (w-5) people

Therefore,

no. of people in the band(x) = Area of the rectangle = Product of width and Length

x = width $\times$ length

x = $(w-3)\times(w-5)$ (equation 2);

Therefore, from equation 1 and equation 2 , we get,

$w\times(w-7)=(w-3)\times(w-5)$

$w^{2}-7w=w^{2} - 8w + 15$

Therefore,

w = 15 (equation 3)

From equation 1 and equation 3, we get

x = $15\times(15-7)$

x = 120.

Therefore,

no. of people in the marching band = 120 people

8 0

3 years ago

Please help me with these two questions

cluponka [151]

Answer:

the gradient is the same= 4

the y intecept is different, one is positive 1 and the other is negative 3

7 0

3 years ago

Can someone show me how to do this I don’t just want the answer I need to know exactly how I can get the answer for my next prob

Lady bird [3.3K]

You have to place the numbers on the correct location of the number line. Let me guide you ☺

0.5 goes halfway between the 0 and 1. You will place a dot which is called a point halfway between 0 and 1.

-2.1 going to the left you will place a tiny dot that represents -2.10.

1 2/3 also known as 1.66 will be placed beteeen the 1 and 2. I think you are getting the picture now. right!

Please vote my answer brainliest. thanks!

Also on Instagram you can follow Hannahayanna for even more help and my specialty of Mentorship!

8 0

3 years ago

Fernando invested money in a 5-yr CD (certificate of deposit) that returned the equivalent of 3.3% simple interest. He invested

iren [92.7K]

Answer:

Fernando invested $ 5000 on the 5-year CD and $ 4000 on the 18-month CD.

Step-by-step explanation:

Since Fernando invested money in a 5-yr CD (certificate of deposit) that returned the equivalent of 3.3% simple interest, and the invested $ 1000 less in a 18-month CD that had a 2% simple interest return, if the total amount of interest from these investments was $ 945.00, to determine how much was invested in each CD the following calculation must be performed:

3.3 x 5 = 16.5

2 x 1.5 = 3

4000 x 0.165 + 3000 x 0.03 = 750

6000 x 0.165 + 5000 x 0.03 = 1140

5000 x 0.165 + 4000 x 0.03 = 945

Therefore, Fernando invested $ 5000 on the 5-year CD and $ 4000 on the 18-month CD.

3 0

3 years ago