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
NISA [10]
2 years ago
15

Help!! this is due Friday and I forgot how to do math​

Mathematics
2 answers:
Doss [256]2 years ago
6 0
Answer is A for you :)
Hatshy [7]2 years ago
5 0
I pretty sure it is A I looked it up.
You might be interested in
How do you solve the system 3x-y z=5, x 3y 3z=-6, and x 4y-2x=12?
dlinn [17]
3x - y + z = 5 . . . (1)
x + 3y + 3z = -6 . . . (2)
x + 4y - 2z = 12 . . . (3)

From (2), x = -6 - 3y - 3z . . . (4)
Substituting for x in (1) and (3) gives
3(-6 - 3y - 3z) - y + z = 5 => -18 - 9y - 9z - y + z = 5 => -10y - 8z = 23 . .  (5)
-6 - 3y - 3z + 4y - 2z = 12 => y - 5z = 18 . . . (6)

(6) x 10 => 10y - 50z = 180 . . . (7)
(5) + (7) => -58z = 203
z = 203/-58 = -3.5

From (6), y - 5(-3.5) = 18 => y = 18 - 17.5 = 0.5
From (4), x = -6 - 3(0.5) - 3(-3.5) = -6 - 1.5 + 10.5 = 3

x = 3, y = 0.5, z = -3.5
8 0
3 years ago
PLEASE HELP ME THESE ARE MY LAST POINTS PLEASEEE
Julli [10]
About 16 copies cost the same amounts
5 0
3 years ago
Read 2 more answers
Seattle, WA and San Francisco, CA lie on the same longitudinal line. San Francisco is at 38° latitude and Seattle is at 47° lati
Helen [10]

Step 1.

Calculate measure of angle α:

47^o-38^o=9^o

Step 2.

Calculate what fraction of the angle 360° ​​is the angle α:

\dfrac{9^o}{360^o}=\dfrac{1}{40}

Step 3.

Calculate the circumference of the Earth (circle):

C=2\pi r\to C=2\pi\cdot4000=8000\pi\ mi

Step 4.

The length of arc is equal 1/40 of the circumference:

\dfrac{1}{40}C=\dfrac{1}{40}\cdot8000\pi=200\pi\ mi

\pi\approx3.14\to\dfrac{1}{40}C\approx200\cdot3.14=628\ mi


<h3>Answer: A) 628 miles</h3>

7 0
4 years ago
At the start of the year a summer holiday to Spain cost £650. It increased by 11% in
olga nikolaevna [1]

Answer:

Final cost = £779

Step-by-step explanation:

It is given that:

Cost of summer holiday =  £650

Amount increased by 11%

Increased cost = 11% of 650

Increased cost = \frac{11}{100}*650

Increased cost = 0.11 * 650 =  £71.50

Amount after increment = 650 + 71.50 = £721.50

Further increase = 8%

Amount = 0.08 * 721.50 = £57.72

Final cost = 721.50 + 57.72 =  £779.22

Thus,

Final cost = £779

5 0
3 years ago
Let u = &lt;-3, -5&gt;, v = &lt;-3, 1&gt;. Find u + v. &lt;-2, -8&gt; &lt;-8, -2&gt; &lt;0, -6&gt; &lt;-6, -4&gt;
salantis [7]

Answer:

<-6,-4>

Step-by-step explanation:

To find u+v, all you have to do is add the corresponding components of each.

That is for example on this problem, you would do

<-3,-5>+<-3,1>

=<-3+-3,-5+1>

=<-6,-4>.

7 0
3 years ago
Other questions:
  • Easy to Find, a computer data base, charges $30/h during peak hours to access its records. The charge during off-peak hours is $
    14·1 answer
  • -8-8(6n+1) solve using distributive property
    14·1 answer
  • Select the correct answer.
    15·2 answers
  • MATH HELP! Answer questions right and you will get brainliest and five stars!
    6·2 answers
  • Eight and 1/6 divided by 2 and 1/4
    14·1 answer
  • -5y = -5
    10·1 answer
  • Can anyone break this down to me?
    12·2 answers
  • Los números que son múltiplos de 6 son:
    11·1 answer
  • Kathy earned $300 mowing lawns last summer. She spent all her earnings on a new CD player and new CDs. If Kathy paid $90 for the
    11·1 answer
  • 8. Write the equation of the line that is parallel to the line 2x + 5y = 15 and passes through the
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!