1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Naily [24]
2 years ago
5

Solve the system of equations using substitution. y=x+2,5x-4y=-3

Mathematics
1 answer:
NARA [144]2 years ago
8 0

Answer:

x=5 and y=7

Step-by-step explanation:

Just substitute in y=x+2 into the equation 5x-4y=-3 to get 5x-4(x+2)=-3 which simplifies to x=5. Substitute x into y=x+2 to find y=7

You might be interested in
How many math books and English books did Nicole purchase?
Ksju [112]
Create a system if equations to solve this.

First equation:
25m + 24e = 220

Second equation:
m + e = 9

Then you must solve the second equation for a variable.

Change m + e = 9 to e = 9 - m.

Then substitute (9 - m) for e in the first equation.

So 25m +24e = 220 becomes 25m + 24(9 - m) = 220.

Now you can solve the first equation because the only variable in it is m.

25m + 24(9 - m) = 220 (Original equation)
25m + 216 - 24m = 220 (Distribute)
m + 216 = 220 (Combine like terms)
m = 4 (Simplify)

Now plug in 4 for m in the second equation.

m + e = 9 (Original equation)
(4) + e = 9 (Substitute)
e = 5 (Simplify)

m represents Math Books and e represents English Books, so Nicole purchased 4 Math Books and 5 English Books.
6 0
3 years ago
Write the number 3.7 as a mixed number let x
puteri [66]
3.7/1 = 3.7

multiply it through to make it a whole number.
x 10

37
_
10

then see how mant times 10 goes into it.
3 times. so 3 is your whole number. 7/10 remains.
that is your fraction.

4 0
3 years ago
A certain drug concentration of 2.145 mg per 1.716 mL, how many mL are needed to give 2.937 gram of the drug.
Ivenika [448]

Answer:

2,349.6‬ ml

Step-by-step explanation:

To start solving this, i realized that there was a difference in the units given and the units asked for in the answer, so I converted 2.937 grams to 2,397 mg. It is given that there are 2.145 mg of the drug in 1.716 mL, so set up the equation 2.145 / 1.716 = 2,937 / x, where x is the mL of the drug needed. Cross multiply to get 5039.892 = 2.145 x. Divide by 2.145 and get 2,349.6‬ ml

5 0
3 years ago
A nutritionist would like to estimate the number of times adults exercise each week. To collect information, the nutritionist em
enot [183]

Answer:

Step-by-step explanation:

c

7 0
2 years ago
Greensboro gets 12 times as many inches of snow as Redville gets. Altoghter, the two towns gets 65 inches of snow.How many inche
Tomtit [17]
Inches of snow Greensboro gets = g
Inches of snow Redville gets = r

\left \{ {{g=12r} \atop {g+r=65}} \right.  \\  \\ (12r)+r=65 \\ 13r=65 \\ r=5

Redville gets 5 inches of snow.
6 0
3 years ago
Other questions:
  • How to find the missing angle measures
    5·1 answer
  • the main and original incentive for european countries to explore was ___. curiosity religion trade warfare
    7·2 answers
  • A.14<br> B.28<br> C.35<br> D.88 <br> Please help ASAP
    6·2 answers
  • Marty's Tee Shirt​ &amp; Jacket Company is to produce a new line of jackets with an embroidery of a Great Pyrenees dog on the fr
    8·1 answer
  • If f(x)=6x-9, find f(4)
    8·2 answers
  • How much elastic energy is stored in a slingshot that has a spring constant of 300 N/m and is stretched by 0.45m?
    7·1 answer
  • Help me w/ both of them pls The last one is just for me to laugh heheehe
    6·2 answers
  • <img src="https://tex.z-dn.net/?f=4x%20-%2010%20%3D2" id="TexFormula1" title="4x - 10 =2" alt="4x - 10 =2" align="absmiddle" cla
    12·2 answers
  • If CD is not parallel to EF, what is m2C?
    14·1 answer
  • Find the nth term of the sequence 3, -1, -5, -9.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!