All categories

2 years ago

Please help! 2x + 3y = 12, x + y = 5

Mathematics

2 answers:

denis23 [38]2 years ago

7 0

x=3 and y=2 because 6+6 = 12 and 2 times 3 is 6 :)

Arlecino [84]2 years ago

6 0

Photo has the answer

You might be interested in

Which expression is equivalent to n+n+n? A. 3^n B. 3n C. n^3 D. n+3

Irina18 [472]

Answer:

B. 3n

Step-by-step explanation:

n + n + n = 3n

------------------------------------------

3n = n + n + n

#IhopeThisHelp

5 0

2 years ago

During 4 days, the price of the stock of PEV Corporation went up 1/4 of a point, down 1/3 of a point, down 3/4 of a point, and u

HACTEHA [7]

The price of the stock of PEV Corporation varies as shown. we have to determine the net charge. Net change is just how much it changed overall, so we will look for all the ups minus all the downs.

Here, "went up" goes with a + sign, and "went down" goes with a - sign.

So, Net charge = $\frac{1}{4} - \frac{1}{3}-\frac{3}{4} + \frac{7}{10}$

= $\frac{1}{4}-\frac{3}{4}- \frac{1}{3} + \frac{7}{10}$

= $-\frac{2}{4}- \frac{1}{3} + \frac{7}{10}$

= $-\frac{1}{2}- \frac{1}{3} + \frac{7}{10}$

LCM of 2,3 and 10 is 30

= $\frac{-15-10+21}{30}$

= $\frac{-4}{30}$

= $\frac{-2}{15}$

So, the net charge is $\frac{-2}{15}$

8 0

2 years ago

2. A sum of $400 was shared between Samantha and Jade. Samantha received S100 more than Jade. a) If Jade received $150, how much

Marina CMI [18]

Answer:

Samantha share =$250

ratio = 5:3

Step-by-step explanation:

Samantha

$= jade + 100$

jade

$150$

samantha

$150 + 100 = 250$

ratio

250:150

5:3

5 0

2 years ago

a cake recipe calls for 2 cups of flour. you want to make 2/5 of the recipe. how many cups of flour should you use

kvasek [131]

The answer is going to be 1/4 of a cup

6 0

3 years ago

Read 2 more answers

Find the sum of this infinite geometric series where a1=0.3 and r=0.55

Lisa [10]

Hello, Marymack!

We know that in a geometric sequence defined by $\mathsf{a_1}$ and $\mathsf{r}$ , the sum can be calculated the following way:

$\mathsf{S_n = \dfrac{a_1}{1-r}}\\ \\ \\ \\ \mathsf{S_n = \dfrac{0.3}{1-0.55}}\\ \\ \\ \mathsf{S_n = \dfrac{0.3}{0.45}}\\ \\ \\ \boxed{\mathsf{S_n = \dfrac{2}{3}=0.666...}}$

3 0

3 years ago

Read 2 more answers