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
liberstina [14]
3 years ago
7

I need help plz help

Mathematics
1 answer:
VashaNatasha [74]3 years ago
7 0

twice as many cats (as) dogs.

c = 2d  [not true]

Three less than twice as many cats (as) dogs.

c = 2d - 3

210 combined,

c + d = 210

Subtracting,

-d = 2d - 3 - 210

-3d = -213

d = 71

Answer: 71

You might be interested in
What is the least common denominator of 6/17 and 5/18
Minchanka [31]

Answer:

The least common denominator is 306.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The approximate height, h, in meters, traveled by golf balls hit with two different clubs over a horizontal distance of d meters
inna [77]

Answer:

a) 100 metres

b) 10 metres

Step-by-step explanation:

Given: the approximate height, h, in meters, travelled by golf balls hit with two different clubs over a horizontal distance of d meters is given by the functions: h=-0.002d^2+0.3d\,,\,h=-0.004d^2+0.5d

To find: distances when the ball is at the same height when either of the clubs  are used. Also, to find this height

Solution:

(a)

-0.002d^2+0.3d=-0.004d^2+0.5d\\d(-0.002d+0.3)=d(-0.004d+0.5)\\-0.002d+0.004d=0.5-0.3\\0.002d=0.2\\d=\frac{0.2}{0.002}=100\,\,metres

(b)

Put d = 100 in h=-0.002d^2+0.3d

h=-0.002(100)^2+0.3(100)\\=-20+30\\=10\,\,metres

4 0
3 years ago
Jose earns $400 during the summer. He deposits it in an account that pays simple interest at a rate of 3% per year. Which equati
a_sh-v [17]

Answer:

12

Step-by-step explanation:

Since this is simple interest the equation will be P*T*R=I  T=time which is 1 year. P=money invested or borrowed  (aka princable) which is 400$. R=Annual rate is 3% per year and I= Interest after the number of years (aka answer) Hope this helps :)

8 0
3 years ago
Read 2 more answers
Find the coordinates of the midpoint of a segment having the given endpoints.
inysia [295]

Answer:

A. (1.55, 2)

Step-by-step explanation:

The formula to apply when finding the midpoint of a segment where the coordinates of the end points are given is;

midpoint=(\frac{x_1+x_2}{2} ,\frac{y_1+y_2}{2} )

where (x₁,y₁) and (x₂,y₂) are the coordinates of the end points

Given;

x₁= -0.4 ,y₁=2.5,  x₂=3.5, y₂=1.5 then applying the formula for midpoint

=(\frac{-0.4+3.5}{2} ,\frac{2.5+1.5}{2} )\\\\\\=(\frac{3.1}{2} ,\frac{4.0}{2} )\\\\\\=(1.55,2.0)

3 0
3 years ago
Solve the equation: 5.1 - 7x = 9.1
bonufazy [111]

Answer:

Order summands

2

Subtract

5

.

1

5.1

5.1

from both sides of the equation

3

Simplify

4

Divide both sides of the equation by the same term

5

Simplify

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Alcatuieste enunturi cu urmatoarele ortograme:sa/s-a,sau/s-au,intr-o,dintr-o,intr-un,dintr-un
    10·1 answer
  • Which expression represents the following situation?
    5·1 answer
  • How do you put -6 + 9 in a number line?
    12·1 answer
  • Leo needs 10 10 red roses and 15 15 pink daisies for every 5 5 bouquets he makes for a flower shop. Drag red roses and pink dais
    9·2 answers
  • A researcher wants to test if the rate of smoking among adults in Chicago is greater than the national rate of 18%. A random sam
    10·1 answer
  • a bowling league requires you to buy a bowling ball for $45 and pay $12 for each game. write and solve an equation to determine
    12·1 answer
  • PLZ HELP! CORRECT ANSWER WILL BE BRAINLIEST
    12·1 answer
  • Jake, Becky, and Max are meeting at Charley's Pizza for dinner and then plan to go to a movie. When they arrive at the pizza pla
    7·2 answers
  • What is the mode of the following numbers?<br> 8, 10, 8, 5, 4, 7, 5, 10,8
    6·2 answers
  • Angle math Hw. Pls help
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!