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Svetlanka [38]
3 years ago
10

Help me please 6 points!!!!! 6&7

Mathematics
2 answers:
Feliz [49]3 years ago
8 0
Let x= apples and y= bananas
x+y= 20
.5x+.75y= 11.5
Solving For x
x= 20-y
.5(20+ y) + .75y= 11.5
10- .5y+ .75y= 11.5
-.5y+ .75y= 11.5-10
.25y=1.5
y= 1.5/ .25
y=6
therefore x= 14 
14 apples and 6 bananas
frez [133]3 years ago
7 0
What math function and made i can help
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Which is lowest; Brand A: 240 mg sodium for 1/3 pickle or Brand B: 325 mg sodium for 1/2 pickle.
Ainat [17]
Brand A is. Just divide 100 (100% of a pickle) by each number, so 100 divided by 240 and 100 by 325. Then you multiply them by the fraction of 100, which 1/3 is 33.3% and 1/2 is 50%. It comes very close but A is the lowest. 
8 0
3 years ago
Find the missing side or angle for each variable round your answer to the nearest tenth
Anton [14]

Answer:

x = 73.4°

Step-by-step explanation:

sin x° = 23/24

sin x° = 0.9583

x = 73.4°

6 0
3 years ago
Find the sum of the first 20 terms of the arithmetic sequence 4, -4, -12, -20​
Vsevolod [243]

Answer:

The sum of the first 20 terms is -1440.

Step-by-step explanation:

We want to find the sum of the first 20 terms of the arithmetic sequence:

4, -4, -12, -20...

The sum of an arithmetic sequence is given by:

\displaystyle S=\frac{k}{2}(a+x_k)

Where <em>k</em> is the number of terms, <em>a</em> is the initial term, and <em>x</em>_<em>k</em> is the last term.

Since we want to find the sum of the first 20 terms, <em>k</em> = 20.

Our initial term <em>a</em> is 4.

Our last term is also the 20th term as we want the sum of the first 20 terms.

To find the 20th term, we can write an explicit formula for our sequence. The explicit formula for an arithmetic sequence is given by:

x_n=a+d(n-1)

Where <em>a</em> is the initial term, <em>d</em> is the common difference, and <em>n</em> is the <em>n</em>th term.

Our initial term is 4. From the sequence, we can see that our common difference is -8 since each subsequent term is eight less than the previous term. Therefore:

x_n=4-8(n-1)

Then the last or 20th term is:

x_{20}=4-8(20-1)=4-8(19)=-148

Therefore, the sum of the first 20 terms are:

\displaystyle\begin{aligned} S_{20}&=\frac{(20)}{2}\left((4)+(-148))\\&=10(-144) \\&= -1440\end{aligned}

5 0
3 years ago
Read 2 more answers
What is the following shows the factors of 5x^2+17x+6
ElenaW [278]

<span><span>(5x+2)</span><span>(x+3)</span></span>

Explanation:

Find factors of <span>5and 6</span> whose products ADD to 17

It might take a bit of trial and error to find the correct combination of factors.

<span><span>........</span>5 and 6</span>
<span><span>.......</span>↓ ↓</span>
<span><span>........</span>5 2 →1×2=2</span>
<span><span>........</span>1 3 →5×3=<span>15<span>−−</span></span></span>
<span><span>...............................................</span><span>17</span></span>

6 0
3 years ago
Read 2 more answers
Given that a = 10cm and b = 27cm work out theta rounded to one decimal place?
klemol [59]

Answer:

28.8

Step-by-step explanation:

A squared plus b squared equals c squared.

3 0
3 years ago
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