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
Sophie [7]
3 years ago
12

X = 2y − 4 7x + 5y = −66

Mathematics
1 answer:
ivolga24 [154]3 years ago
3 0

Answer:

Step-by-step explanation

Substitute 2y-1 for x in the second equation:

7x + 5y = -66

7(2y-4) + 5y = -66

then solve for y:

14y - 28 + 5y = -66

19y = -38

y = -2

Substitute -2 for y in the first equation:

x  = 2y - 4

x = 2(-2) - 4

x = -8

The lines intersect at (-8,-2)

You might be interested in
Janet has 3 sweatshirts, 5 t-shirts, and 2 pairs of pants that can be worn together. If each outfit has a sweatshirt, t-shirt, a
RideAnS [48]

Answer:

30 outfits

Step-by-step explanation:

First, come up with all the possibilties for one of the sweatshirts. So...

S11

S12

S21

S22

S31

S32

S41

S42

S51

S52

Count up all of those and then multiply it by three

10 * 3 = 30

Have a wonderful day!

4 0
3 years ago
Ue the following information to complete the partial worksheet for bills company. Record the appropriate adjusting entries using
lbvjy [14]

If I am reading this right, it looks like the 10, 3, 2, 1 are Adjustments and the Adjusted TB should equal the difference. Make sure you know how to add and subtract the debit and credit adjustments correctly.

TB +/- Adj = ATB

7 0
3 years ago
Researchers conducted an experiment to test the effects of alcohol. Errors were recorded in a test of visual and motor skills fo
Jobisdone [24]

Answer:

H0: σ1=σ2

Ha : σ1 >σ2

B. Upper H 0H0​:

sigma Subscript 1 Superscript 2σ21equals=sigma Subscript 2 Superscript 2σ22

Upper H 1H1​:

sigma Subscript 1 Superscript 2σ21greater than>sigma Subscript 2 Superscript 2σ22

Step-by-step explanation:

The claim is  that the treatment group has errors that <em><u>vary significantly</u></em> more than the errors of the placebo group.

The claim is the alternative hypothesis and the opposite of claim is the null hypothesis.

Vary significantly means that it is greater than so we choose the alternate hypothesis of greater than and the null hypothesis will be equal to errors of the placebo group.

So the correct choice is B.

B. Upper H 0H0​:

sigma Subscript 1 Superscript 2σ21equals=sigma Subscript 2 Superscript 2σ22

Upper H 1H1​:

sigma Subscript 1 Superscript 2σ21greater than>sigma Subscript 2 Superscript 2σ22

Choice A,C and D all are incorrect.

This can be written as

H0: σ1=σ2

Ha : σ1 >σ2

5 0
3 years ago
How would you grid 14
MArishka [77]

Answer:

you would grid 14 on the right of a number line since it is a positive number

6 0
3 years ago
Find the missing side lengths. Leave your radicals in simplest form.
natima [27]

No way, until you tell us how many sides the whole figure has, and
all the rest of the information you have, such as the values of some
sides or some angles.

So far, all you've said is:  "I have a question.  What is the answer ?"


8 0
4 years ago
Read 2 more answers
Other questions:
  • What is the rule if the reflection?
    8·2 answers
  • Find the area of the regular polygon
    11·1 answer
  • Solve the “and” compound inequality for –1 &lt; 6x + 1 ≤ 13
    10·1 answer
  • Simplify: 11^3÷11^3×11^3
    12·1 answer
  • A 85cm snowman melts and loses 3cm in height for every hour the sun shine and the sun shine only 6.5 hours a day. How many days
    9·1 answer
  • Of 150 random customers, 63 ordered ham, 73 ordered turkey, and the rest ordered rast beef. Based upon the results, hownmany of
    11·2 answers
  • Do we need to pass college to be able to be a substitute
    11·2 answers
  • How many miles did Byron drive? Please do not guess!
    15·2 answers
  • Find the slope of the line ​
    5·2 answers
  • The grid shows Figure Q and its image Figure Q′ after a transformation.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!