All categories

3 years ago

What is? y=x+5 2y-x=13

Mathematics

2 answers:

Oduvanchick [21]3 years ago

8 0

Answer:

Step-by-step explanation:

y-x=5 2y-x=13 subtract -y=-8 y=8 8*5 y=8-5=3

mixer [17]3 years ago

5 0

Answer:

x=3

y=8

Step-by-step explanation:

y-x=5

2y-x=13

subtract

-y=-8

y=8

8-x=5

x=8-5=3

You might be interested in

What is the square root of 500

noname [10]

500 is not a perfect square number. Therefore, find the factors of 500 with the largest perfect square. In this case, 100 is the largest perfect square number in 500.
$500= \sqrt{500} ^2$

$\sqrt{500}=\sqrt{100*5}$

$\sqrt{500}=\sqrt{100}\sqrt{5}$

$\sqrt{500}=10\sqrt{5}$

If you are simply looking for the calculator result, you will get $22.36$

6 0

3 years ago

Read 2 more answers

At time (t) hours after taking the cough suppressant hydrocodone bitartrate, the amount, A, in mg, remaining in the body is give

Mice21 [21]

1)we calculate the amount of the drug is left in the body 2 hours after the dose is administered.
t=2
A(t)=14(08)^t
A(t)=14(0.8)²=14(0.64)=8.96

Answer: after of two hours the amount of drug left in te body is 8.96 mg.

2)we calculate the time required to stay in the body 1 mg of drug.

A(t)=1
14(0.8)^t=1
ln [14(0.8)^t]=ln1
ln14+tln(0.8)=0
tln(0.8)=-ln 14
t=-ln 14 / ln (0.8)
t=11.8267...≈11.83

Answer: the time required is 11.83 hours (≈11 hours, 49 minutes, 48 seconds).

5 0

4 years ago

A function, named g, has an input of c, and a range of all real numbers. What’s the function?

Vlad1618 [11]

we are given

a function name g has input x=c

and range is all real numbers

Since, input is constant

but output is keep varying

so, this function would be vertical line in shape

and we can write that function as

$x=c$ .............Answer

5 0

3 years ago

Can someone help with these

Hoochie [10]

Answer:

$y=4^x\Rightarrow\begin{array}{c|cc}x&y\\in put&o utput\\1&4\\2&16\\3&64\\4&256\\5&1024\\\end{array}\\\\y=-3^x\Rightarrow\begin{array}{c|cc}x&y\\in put&o utput\\1&-3\\2&-9\\3&-27\\4&-81\\5&-243\end{array}\\\\$

Step-by-step explanation:

Put the values of x (input) to the formulas of the functions

$y=4^x\\\\x=1\to y=4^1=4\\\\x=2\to y=4^2=16\\\\x=3\to y=4^3=64\\\\x=4\to y=4^4=256\\\\x=5\to y=4^5=1024\\===================\\\\y=-3^x\\\\x=1\to y=-3^1=-3\\\\x=2\to y=-3^2=-9\\\\x=3\to y=-3^3=-27\\\\x=4\to y=-3^4=-81\\\\x=5\to y=-3^5=-243$

8 0

3 years ago

What is the value of variable in the equation below D +7×2 = 20

aleksklad [387]

Answer:

D=6

Step-by-step explanation:

So, first, we can multiply 7x2=14. Then, it would be D+14=20. 20-14=6, so D=6.

7 0

2 years ago

Read 2 more answers