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m_a_m_a [10]
3 years ago
6

28 = -4(d − 79) + 100 I know how to do these, but I just don't want to risk my IXL percent going down... Thanks! (solve for d)

Mathematics
2 answers:
Deffense [45]3 years ago
8 0

Answer:

D=97

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

taurus [48]3 years ago
6 0

Answer:

Step-by-step explanation:

28=-4 (d-79)+100

28=-4d+316+100

4d=316+100-28

4d=388 (divide both side by 4)

d=97

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Help me please on number 1......
dangina [55]
849-1.5=847.5
6.8-4.8=2

847.5 divided by 2 =423.75
8 0
3 years ago
Akira receives a prize at a science fair for having the most informative project. Her trophy is in the shape of a
AlekseyPX

Answer:

45 square inches

Step-by-step explanation:

Akira receives the prize at the science fair for having the most informative project her trophy is in the shape of a square pyramid and is covered in shiny gold foil how much gold foil did it take to cover the trophy including the bottom

Total surface  =  surface area of the base square + area of 4 triangles

Calculate the surface area of the base square

surface area of the square =  s^2

where s= side length

s=3 in

The surface area of the base  =s^2

=3^2

= 9 square inches

The surface area of the side triangles

The area of the triangle = (1/2)* side length* slant height

Side length=3 in

Slant height=6 in

substituting the values,

The area of the triangle =1/2*3*6

= 18/2

= 9 square inches

There are 4 triangles

The area of 4 triangles  =  4 x 9  

= 36 square inches

Therefore,

Total surface  =  surface area of the base square + area of 4 triangles

=  9 + 36

= 45 square inches

6 0
3 years ago
Molly categorized her spending for this month into four categories: Rent, Food, Fun, and Other. The percents she spent in each c
Alisiya [41]

Answer:

750

Step-by-step explanation:

it is to easey

5 0
3 years ago
Suppose the solutions of a homogeneous system of four linear equations in five unknowns are all multiples of one nonzero solutio
Akimi4 [234]

Consider a homogeneous machine of four linear equations in five unknowns are all multiples of 1 non-0 solution. Objective is to give an explanation for the gadget have an answer for each viable preference of constants on the proper facets of the equations.

Yes, it's miles true.

Consider the machine as Ax = 0. in which A is 4x5 matrix.

From given dim Nul A=1. Since, the rank theorem states that

The dimensions of the column space and the row space of a mxn matrix A are equal. This not unusual size, the rank of matrix A, additionally equals the number of pivot positions in A and satisfies the equation

rank A+ dim NulA = n

dim NulA =n- rank A

Rank A = 5 - dim Nul A

Rank A = 4

Thus, the measurement of dim Col A = rank A = five

And since Col A is a subspace of R^4, Col A = R^4.

So, every vector b in R^4 also in Col A, and Ax = b, has an answer for all b. Hence, the structures have an answer for every viable preference of constants on the right aspects of the equations.

8 0
3 years ago
Find the value of 4x if x/2=3
Doss [256]

Answer:

24

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

x/2 = 3

x = 3×2

x = 6

Therefore

4x = 4 × 6

4x = 24

4 0
3 years ago
Read 2 more answers
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