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
arlik [135]
2 years ago
12

If a= -2, y = -3 and z = 4, find the values of the following algebraic expressions. -3az

Mathematics
1 answer:
kipiarov [429]2 years ago
5 0

Answer:

24

Step-by-step explanation:

substitute the given values for a and z into the expression

- 3az

= - 3(- 2)(4) = 6 × 4 = 24

You might be interested in
I need help <br> 22 points to whoever helps me
Olenka [21]

Answer:

12 3/4 same slope fro both

13 DE = 5, CB = 10

14 see below

Step-by-step explanation:

12.  the slopes are the same

D(0, 3)  E(4, 6) slope is (change in y)/(change in x)

   change in y = 3 to 6 is a change of +3

   Change in x = 0 to 4 is a change of +4

slope is 3/4

13  To fine lengths you can distance formula or Pythagorean theorem (spoiler: they are related to each other)  

DE² = 3² + 4²

DE² = 9 + 12

DE² =  25

√DE² = √25 = 5

DE = 5

and

CB² = 6² + 8²

CB² = 36 + 64

CB² = 100

√CB² = √100 = 10

CB = 10

14.   since the slopes are the same are DE is 1/2 or CB its is the mid segment.  because (taken from mathopenref.com/trianglemidsegment.html)

The midsegment is always parallel to the third side of the triangle. In the figure above, drag any point around and convince yourself that this is always true.

The midsegment is always half the length of the third side. In the figure above, drag point A around. Notice the midsegment length never changes because the side BC never changes.

A triangle has three possible midsegments, depending on which pair of sides is initially joined.

6 0
3 years ago
Jamal has 63 photos on his phone. He has enough storage space for 128 photos
Lyrx [107]

Answer:

65

Step-by-step explanation:

128-63=65

6 0
3 years ago
Read 2 more answers
Danielle runs 1/5 of a mile in 4.5 minutes. if she continues at the same speed, how long will it take her to run two miles?
motikmotik
(1/5) / 4.5 = 2 / m....1/5 mile to 4.5 minutes = 2 miles to m minutes
cross multiply
(1/5)(m) = (2)(4.5)
1/5m = 9
m = 9 * 5/1
m = 45 minutes <===
4 0
3 years ago
1x+11y=55 substitution
STatiana [176]

Answer:

y = -1/11 + 5

Step-by-step explanation:

1x + 11y = 55

-1x          -1x

11y = -1x + 55

/11        /11

y = -1/11 + 5

Hope this helps!

4 0
2 years ago
The length of a rectangle is 3 times the width. If the length is decreased by 4 meters and the width is increased by 1 meter, th
olga nikolaevna [1]

Good morning☕️

______

Answer:

w is the width

L is the length

p is the perimeter

w=9

L=27

___________________

Step-by-step explanation:

p=2[(L-4) + (w+1)]

⇔p=2[(3w-4) + (w+1)]

⇔p=2[4w-3]

⇔p=8w-6

⇔66=8w-6

⇔8w=72

⇔w=9

Then L=3w=27

:)

6 0
4 years ago
Other questions:
  • Help me solve this problem please
    6·1 answer
  • If the cubic function P(x) includes the points (−4, 0), (0, 0), and (2, 0), which of the following represents this function?
    15·1 answer
  • I need help on whichever question anyone might know how to do . QUICK
    13·1 answer
  • David works at a nearby electronic store. He makes commission of 15% on everything he sells. If he sells a laptop for $293.00 ho
    10·1 answer
  • (2m^4) • m3<br> Need help ASAP I have the answer but I need help showing work
    13·2 answers
  • 8. If you were going to use the quadratic formula to solve the following equation and a = 9, what number would you use as the va
    5·1 answer
  • Which equation can be used to find the value of x?
    11·1 answer
  • A,B,C, or D. Which one?
    12·1 answer
  • What is the justification for step 3 in the solution process​
    14·1 answer
  • What fraction equal to 1/2 with a denominator of 6 and a fraction equal to 1/3 with a denominator of 6. Then add the fractions.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!