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solniwko [45]
3 years ago
9

Please answer quick:) I will give you brainliest

Mathematics
1 answer:
yan [13]3 years ago
8 0
I think a)= decrease by 20 (or something with 20)
B coming soon
You might be interested in
Solve: 9x+y=2<br> -4x-y=-17
beks73 [17]

Answer:

2

−

9

x

Step-by-step explanation:

6 0
3 years ago
−4x − 5y − z = 18<br> −2x − 5y − 2z = 12 <br> −2x + 5y + 2z = 4
MrRissso [65]

Answer: (x,y,z) = (-4,0,-2)

Step-by-step explanation:

6 0
3 years ago
find the number of terms in an AP given that its first and last terms are 13 and - 23 respectively and that its common differenc
Leokris [45]

Answer:

<u>There are 17 terms in the sequence</u>

Step-by-step explanation:

<u>Arithmetic Sequence </u>

An arithmetic sequence is a list of numbers with a definite pattern by which each term is calculated by adding or subtracting a constant number called common difference to the previous term. If n is the number of the term, then:

a_n=a_1+(n-1)r

Where an is the nth term, a1 is the first term, and r is the common difference.

In the problem at hand, we are given the first term a1=13, the last term an=-23, and the common difference r=-2 1/4. Let's solve the equation for n:

\displaystyle n=1+\frac{a_n-a_1}{r}

We need to express r as an improper or proper fraction:

\displaystyle r=-2\frac{1}{4}=-2-\frac{1}{4}=-\frac{9}{4}

Substituting:

\displaystyle n=1+\frac{-23-13}{-\frac{9}{4}}

\displaystyle n=1+\frac{-36}{-\frac{9}{4}}

\displaystyle n=1+36*\frac{4}{9}=17

n=17

There are 17 terms in the sequence

5 0
4 years ago
Use technology to approximate the solution(s) to the system of equations to the nearest tenth of a unit.
kodGreya [7K]
The technology I used in helping me solve the problem is using Microsoft Excel. I made one column for the x values which were gathered from the choices, one column for f(x) whose equation is 8^(x-9), and another column for g(x) whose equation is log(3x) + 2. 

Inputing these equation to the last two columns yield the values shown in the picture.The 'NUM' means that the equation at that value of x is undefined. From the values, the correct solution would be 

(0,0), (9.2,1.5) and (9.6,3.5) to the f(x) equation
(9.6,3.5) to the g(x) equation

5 0
3 years ago
Math Need Help
crimeas [40]
Hi there! The answer is 5/6 hours (which is 50 minutes)

To find the total time Ann spent on her papers, we must add the fractions.
\frac{1}{3}  +  \frac{1}{2}  =  \frac{2}{6}  +  \frac{3}{6}  =  \frac{5}{6}

In the first step, we had to make the denominators the same. We need to use the LCM of the numbers 2 and 3. LCM(2,3) = 6.

In the second step we added the fractions. Remember that we only need to add the numerators (the denominator remains the same).

~ Hope this helps you!
8 0
3 years ago
Read 2 more answers
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