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
pav-90 [236]
4 years ago
6

Please do not guess I have to answer this correctly! Please make sure you notice all the symobols!!

Mathematics
2 answers:
oee [108]4 years ago
8 0

Answer:

5 a - 7 b + b ^ 2 = -15

Step-by-step explanation:

Evaluation of the expression for a = - 1 and b = 5.  

5 a - 7 b + b ^ 2,

Putting the values in expression,

= 5 a - 7 b + b ^ 2,

= 5 ( - 1 ) - 7 ( 5 ) + ( 5 ) ^ 2,

= - 5 -35 + 25,

= - 40 + 25,

= -15

Yanka [14]4 years ago
5 0
5 x (-1) - 7 x 5 + 5^2
-5 - 35 +25
-40 + 25
= -25
You might be interested in
HELPPPPP!!!!!!! PLEASESWE
harina [27]
What you are trying to do, I don't know. I will combine them for you.

8)

\displaystyle \frac{6}{x-1} - \frac{5x}{4} \\ \\ = \frac{4(6)}{4(x-1)} - \frac{5x(x-1)}{4(x-1)} \\ \\ 
= \frac{24}{4(x-1)} + \frac{-5x(x-1)}{4(x-1)}  \\ \\
= \frac{24}{4(x-1)} + \frac{-5x^2+5x}{4(x-1)}  \\
= \frac{24 - 5x^2 + 5x}{4(x-1)}

____________________

9)

\displaystyle 
\frac{3}{x+7} + \frac{4}{x-8} \\ \\ = 
\frac{3(x-8)}{(x+7)(x-8)} + \frac{4(x+7)}{(x+7)(x-8)} \\ \\ =
\frac{3x-24}{(x+7)(x-8)} + \frac{4x+28}{(x+7)(x-8)} \\ \\ =
\frac{3x-24}{(x+7)(x-8)} + \frac{4x+28}{(x+7)(x-8)} \\ \\ =
\frac{7x + 4}{(x+7)(x-8)}
5 0
3 years ago
The ratio of the weight of an object on Planet A to the weight of the same object on Planet B is 100 to 3. If an elephant weighs
guapka [62]
Planet A : Planet B
   100      :      3
  (x 41)          (x 41)
4100       :     123


Answer: The elephant that will weigh \boxed {\boxed {\text {123 pounds}}} in Planet B.

4 0
3 years ago
Read 2 more answers
Central Park in New York City is shaped like a rectangle. On a map of the park
mariarad [96]

Answer:

6

Step-by-step explanation:

Given that the coordinate plane, three of the vertices of the rectangle are located at (-1.25, -0.25),

(-1.25, 0.25), and (1.25, 0.25)

The length L of the shape will be:

L = 0.25 - ( - 0.25 )

L = 0.25 + 0.25

L = 0.5

The width of the shape will be:

W = 1.25 - ( - 1.25)

W = 1.25 + 1.25

W = 2.5

Perimeter P = 2L + 2W

Substitute the Length and the width into the formula

P = 2(0.5) + 2(2.5)

P = 1 + 5

P = 6 metres

Therefore, the perimeter of the shape is 6 metres

7 0
3 years ago
Sam lives 8 miles from work and Mike lives 30 miles from work. How much farther is Mike’s trip to work than Sam’s?
telo118 [61]
22 miles,
30miles - 8 miles = 22 miles
Mikes trip to work is 22 miles farther than sam’s
3 0
3 years ago
Please help my grade are low!!
Bogdan [553]

Answer:

250%of4.4=look it up girl

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • If jasmine gets $3.00 every time her song gets 1500 streams how much money would she have if she got 3 million streams
    7·1 answer
  • An equilateral triangle has an altitude length of 18 feet. Determine the length of a side of the triangle
    15·1 answer
  • A population has a mean mu μ equals = 87 and a standard deviation σ = 24. Find the mean and standard deviation of a sampling dis
    7·1 answer
  • The path of water from a hose on a fire tugboat can be approximated by the equation y=-0.0055x^2 +1.15x + 5, where y is the heig
    7·1 answer
  • Poisoning by the pesticide DDT causes convulsions in humans and other mammals. Researchers seek to understand how the convulsion
    12·1 answer
  • Which measurement is not equivalent to the others? 1 yard 3 feet 1/100 of a mile 36 inches
    8·2 answers
  • What is the volume of a volleyball with a diameter of 8 inches
    9·1 answer
  • When might term insurance be a better option than whole life insurance???<br> HURRY PLS
    7·2 answers
  • What slope is parallel to m = 3/4
    8·1 answer
  • How much is 55 as a percentage of 50?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!