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
nikdorinn [45]
3 years ago
12

Kaitlyn solved the equation for x using the following calculations. Negative 5.4 + x = 12.2. Minus 5.4. x = 6.8. What error, if

any, did she make?
Mathematics
1 answer:
omeli [17]3 years ago
3 0

Step-by-step explanation:

The equation that Kaitlyn solved is as follows :

-5.4+x=12.2

The steps to solve it as follows :

Step 1. Add 5.4 to both sides,

-5.4+x+5.4=12.2+5.4

Step 2. 5.4 will cancel out as both have opposite signs

x=17.6

But Kaitlyn solved it as :

5.4.x=6.8

She has multiplied -5.4 and x which is wrong. The correct answer is 17.6.

You might be interested in
Kevin planted ome corn in the back yard and meaure it height regularly. Currently, the talk are 75 inche tall. That i 25% taller
Pavlova-9 [17]

The height of the tree was 56 inches.

We can calculate the percentage of a certain amount by :

Subtracting  New - Original / New multiplied by 100

this implies it will be

75 - x / 75 × 100 = 25 %

7500 - 100 x = 1875

this implies 7500 - 1875 = 100 x

5625 = 100 x

Thus , On dividing both sides by 100 we get

56.25 = x

Now on rounding off this number we will get

56 = x

Thus the original height of the corn plant was 56 inches

To know more about percentage you may visit the link which is mentioned below :

brainly.com/question/10168902

#SPJ1

8 0
2 years ago
Let z1 = a1 + b1i, z2 = a2 + b2i, and z3 = a3 + b3i. Prove the folowing using algebra or by showing with vectors.
Svetlanka [38]

Answer:

a)z1 +z2 =z2 + z1 ...proved.

b) z1 + ( z2+ z3 )=(z1+z2)+z3 ... proved.

Step-by-step explanation:

It is given that there are three vectors z1 = a1 + ib1, z2 = a2 + ib2 and z3 = a3 + ib3. Now, we have to prove (a) z1 + z2 = z2 + z1 and (b) z1 + (z2 +z3) = (z1 + z2) + z3.

(a) z1 + z2 = (a1 +ib1) + (a2+ ib2) = (a1 +a2) + i(b1 +b2) {Adding the real and imaginary parts separately}

Again, z2 + z1 =(a2 +ib2) + (a1 +ib1) = (a2 +a1) + i(b2 +b1) {Adding the real and imaginary parts separately}

Hence, z1 +z2 =z2 + z1 {Since, (a1 +a2) = (a2 +a1) and (b1 +b2) = (b2 +b1)}

(b) z1 + ( z2+ z3 ) = [a1 + ib1] + [(a2 + a3 ) + i(b2 + b3 )] = ( a1 + a2 + a3) + i( b1+ b2+b3) {Adding the real and imaginary parts separately}

Again, (z1+z2)+z3 = [(a1+a2) +i(b1+b2)]+[a3+ib3] = ( a1 + a2 + a3) + i( b1+ b2+b3) {Adding the real and imaginary parts separately}

Hence, z1 + ( z2+ z3 )=(z1+z2)+z3 proved.

5 0
3 years ago
Which function represents the graph of f(x)=|2x| after it is translated 5 units to the left?
Mashutka [201]
As you need to translate to the left this is an horizontal translation so you have to replace f(x) by f(x-h) and when h is less than 0 the graph shifts left, it mean h is negative. So for this problem g(x)= Ι2(x--5)Ι  then g(x) = Ι2(x+5)Ι
5 0
3 years ago
Read 2 more answers
Add: (112 + 2) + (92 - 4)
pantera1 [17]

Answer:

See below.

Step-by-step explanation:

(112+2)+(92-4)

114+88

202

-hope it helps

5 0
3 years ago
Read 2 more answers
If f(x) = 2x - 3 and g(x) = Radical over x-8,<br> what is (fºg)(24)?
Strike441 [17]

Answer:

5

Step-by-step explanation:

Plug in 24 for x in your g(x) equation.

g(24)=\sqrt{24-8} \\g(24)=\sqrt{16} \\g(24)=4

Next, plug in your g(x) value, 4, to your f(x) equation for x.

f(4)=2(4)-3\\f(4)=8-3\\f(4)=5

7 0
3 years ago
Other questions:
  • The sum of 2 numbers is 7. if one number is subtracted from the other, the result is -1. find the numbers
    5·1 answer
  • What is the following product
    8·2 answers
  • Please help!
    5·2 answers
  • WHAT NUMBER IS 75% OF 125
    7·1 answer
  • What is the volume help needed ASAP will give BRAINLIEST
    9·2 answers
  • A successful author invests some of his earnings in two accounts for 1 year. the function f(x)=.05 models the interest he earns
    14·1 answer
  • What’s 15f plus 5g plus 45?
    5·1 answer
  • Please help, its due tomorrow and I'm literally dying man.
    6·1 answer
  • PLS PLS HELP ASAP IT IS FOR A TEST
    13·2 answers
  • If ∠A &gt; ∠B, then what is the relation between AC and BC?<br>​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!