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
KIM [24]
3 years ago
5

Help me please!!!!!!!!!!!!!!!!

Mathematics
2 answers:
Sav [38]3 years ago
7 0

Answer:

x=-4 and y=4

Step-by-step explanation:

(6x+9y)-(6x+7y)=12-4=8

--> 9y-7y=8

-->2y=8-->y=4

-->6x+7×4=4  -->x=-4

kompoz [17]3 years ago
5 0
Y=4 and X=-4
Next time try to cancel out x first by multiplying by -1 so you can get y first then go from there
You might be interested in
A gym membership cost $25 to join and $14 each month.write an algebraic expression to find the cost of the gym membership for 6
DanielleElmas [232]
Maybe this will help

<span>25 + (6 * 14)</span>
7 0
3 years ago
Read 2 more answers
What is a verbal expression for 15+ r
frosja888 [35]
The sum of 15 and r.
Sum is the term used in verbal addition problems. 
This is an expression therefore, you do not state what it equals. We no this because there is no equals sign.

5 0
3 years ago
7. A vase 25 cm tall is positioned on a bench near a wall as shown. The shape of the vase follows the curve y = (x - 10)^2, wher
Kitty [74]

Answer:

Step-by-step explanation:

the base of the vase will be where the vase touches the x-axis, that is 10 cm, therefore, the base is 10 cm from the wall

:

b) 25 = x^2 -20x +100, we solve for x to find the closest distance since as we move up the vase the distance to the wall gets closer(assume the y-axis is the wall), then

x^2 -20x +75 = 0  (x-15) * (x-5) = 0

x = 15 and x = 5

we reject x = 15

the shortest distance from the top of the vase to the wall is 5 cm

:

c) this is a left shift of the equation y = (x-10)^2

from b) we know that the left shift is 5 cm

10 - 5 = 5 cm from the wall to the base

:

d) y = (x-10+5)^2

y = (x-5)^2    

4 0
2 years ago
In the 1980’s, a clinical trial was conducted to determine if taking an aspirin daily reduced the incidence of heart attacks. Of
zubka84 [21]

There is enough evidence to conclude that taking aspirin cannot  reduces the chance of cancer.

Given sample size of patients take aspirin 11037, sample size of patients who have assigned placebo group be 11034. 104 doctors who take aspirin had a heart attack, 189 doctors had placebo had heart attacks.

First we have to form hypothesis.

H_{0} :p{1} -p_{2} =0

H_{1}:p_{1} -p_{2} < 0

We have to find the respective probabilities.

p_{1}=104/11037

=0.0094

p_{2}=189/11034

=0.0171

Now their respective margin of errors.

s_{1}=\sqrt{ {(0.0094*0.9906)/11037}

=0.0009

s_{2}=\sqrt{0.0171*0.9829}

=0.0011

Hence the distribution of the differences,they are given by:

p=p_{1} -p_{2}

=0.0094-0.0171

=-0.0077

S=\sqrt{s_{1} ^{2}+s_{2} ^{2}  }

=\sqrt{(0.0009)^{2} +(0.0011)^{2} }

=0.00305

z=(p -f)/S (In which f=0 is the value tested at the null hypothesis)

=(-0.0077-0)/0.00305

=-2.52

p value will be 0.005.

p value of 0.05 significance level.

z=1.96.

1.96>0.005

So we will reject the null hypothesis which means it cannot reduce the whole chance of becomming a heart attack.

Hence there is enough evidence to conclude that taking aspirin cannot  reduces the chance of cancer.

Learn more about t test at brainly.com/question/6589776

#SPJ4

6 0
2 years ago
A group of 8 friends go to the movies. A bag of popcorn costs $2.99. How much will it cost to get one bag of popcorn for each fr
Akimi4 [234]

Answer:

23.92

Step-by-step explanation:

You can round 2.99 to 3 and do 3x8 mentally then subtract 8 cents ¯\_(ツ)_/¯

7 0
3 years ago
Read 2 more answers
Other questions:
  • Can you guys help me with #13 please I don't get it
    9·2 answers
  • EXPLAIN HOW YOU WRITE PRODUCTS WHEN THEY ARE NOT ENOUGH DIGITS IN THE PRODUCT TO PLACE THE DECIMAL POINT?
    9·2 answers
  • Decompose 3/8 as the sum of unit fractions
    13·1 answer
  • How does the answer for this 09:009 is 10??
    9·1 answer
  • Your friend approaches with three, fair 5-sided dice (labeled 1 to 5). You get to roll them and your friend gives you money base
    6·1 answer
  • In 6 years, John will be 3 times the age he was 2 years ago. What is his current age?
    12·1 answer
  • A triangle is rotated 90° about the origin. Which rule describes the transformation?
    13·1 answer
  • PLEASE HELPPP<br> ONG ILL GIVE YOU ALL MYPOINTS JUST HELP
    6·2 answers
  • Tadashi had a veggie pizza that was cut into 8 equal pieces. He ate 2 pieces and left the other 6 in the box. What fraction of t
    8·1 answer
  • Help please!!!!!!!!!!!!
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!