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k0ka [10]
2 years ago
10

Determine the value of a + b in the system of equations below. 5a + 4b = 22 7a-b= 11

Mathematics
1 answer:
dexar [7]2 years ago
6 0

Answer:

We have a + b as;

2 + 3 = 5

Step-by-step explanation:

Here, we want go get the value of a and b

from the second equation, we can get an expression for b

We have this as;

7a - b = 11

Thus,

b = 7a - 11

Now, from here, we can substitute the value of b into the first equation

We have this as;

5a + 4(7a - 11) = 22

5a + 28a -44 = 22

33a = 22 + 44

33a = 66

a = 66/33

a = 2

Recall;

b = 7a - 11

substituting the value of a from above;

b = 7(2) - 11

b = 14 - 11

b = 3

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Select the correct answer what is the range of the function shown in the graph?
Vedmedyk [2.9K]

Answer:

In the step by step

Step-by-step explanation:

Graph 1 : k(x)=(1/4)^x

Graph 2: f(x)=-(1/4)^x

Graph 3: g(x)=4^x

Graph 4: h(x)=-4^x

7 0
3 years ago
Maddox McDonald A caterpillar moves across the grass at a rate of 4 2/3 feet every 7 minutes. How fast does the caterpillar move
harina [27]

Answer: 2/3 feet per minute

Step-by-step explanation:

From the question, we are informed that a caterpillar moves across the grass at a rate of 4 2/3 feet every 7 minutes.

The rate at which the caterpillar move in feet per minute will be:

= 4 2/3 ÷ 7

= 14/3 ÷ 7

= 14/3 × 1/7

= 14/21

= 2/3 feet per minute

8 0
3 years ago
Give an example question ( use words and numbers)
Ymorist [56]
A 2 - - 7 = 9
b - 3 - - 4 = 1
c - 5 - 6 = - 11
d - 3 - - 5 = 2
8 0
3 years ago
Please help me );
ASHA 777 [7]

Answer:

f(x)=x^2

h(x)=(x+5)^2

To find:

The graph of h(x) using the graph of f(x).

Solution:

We have,

f(x)=x^2

It a parent quadratic function. The graph of this function is an upward parabola with vertex at origin, i.e., (0,0).

Now,

h(x)=(x+5)^2

It can be written as

h(x)=f(x+5)           [\because f(x)=x^2]

It means, the graph of f(x) shifted 5 units left to get the graph of h(x)

Therefore, the graph of both functions are shown below.

4 0
3 years ago
Hello I need help please I am stock
zheka24 [161]
7.
assuming you mean SURFACE area

look at shape
fold it out or whateveryo yo like
we see that the faces are
4 triangles
4 rectangles in midddle
4 more triangles on other side


calculate areas
area of triangle=1/2bh
area of rectangle=bh

leftmost side
h=1.8
b=2
4*1/2*2*1.8=7.2 cm^2

middle recangles
base=3
height=2
aera=3*2=6
multply by 4 snce 4 recangles
6*4=24 cm^2

other triangles

b=2
h=2.71
total area=4*1/2*2*2.71=10.84cm^2
add them up

7.2cm^2+24cm^2+10.84cm^2=42.04cm^2



8. interesting question, not enought time to answer for me and partially too copmplex
8 0
3 years ago
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