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Assoli18 [71]
3 years ago
7

2 quarters and 2 dimes is what percent of 1 dollar?

Mathematics
1 answer:
9966 [12]3 years ago
5 0

Answer: 70%

Step-by-step explanation:

2 quarters and 2 dimes is 70 cents. 100 cents total in a dollar so no need for further calculation. 70%

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A cone has a radius of 3 and a height given by the expression 2a. Which expression represents the volume of the cone?
DiKsa [7]
V=(1/3)hπr^2 where h=height and r=radius
given
radius=3
height=2a

r=3
h=2a

v=(1/3)hπr^2
v=(1/3)(2a)π(3)^2
v=(1/3)2aπ9
v=6aπ


so the expression would be some variaant of v=6aπ
5 0
3 years ago
Read 2 more answers
Giải các phương trình vi phân sau<br> y' - y/x+1 = 2
KatRina [158]

It looks like the differential equation is

y'-\dfrac y{x+1}=2

Multiply both sides by 1/(<em>x</em> + 1) :

\dfrac{y'}{x+1}-\dfrac y{(x+1)^2} = \dfrac2{x+1}

The left side is now a derivative of a product,

\left(\dfrac y{x+1}\right)' = \dfrac2{x+1}

Integrate both sides with respect to <em>x</em> :

\dfrac y{x+1} = 2\ln|x+1|+C

Solve for <em>y</em> :

y = 2(x+1)\ln|x+1| + C(x+1)

3 0
3 years ago
3. Complete the proof below.<br><br><br> Help please!!!
baherus [9]

Answer:

The completed proof is presented as follows;

The two column proof is presented as follows;

Statements    {}                                               Reason

1. \overline {HI} ║ \overline {KL}, J is the midpoint of \overline {HL} {}         1. Given

2. ∠IHJ ≅ ∠JLK{}                                            2. Alternate angles are congruent

3. ∠IJH ≅ ∠KJL   {}                                         3. Vertically opposite angles

4.  \overline {HJ} ≅ \overline {JL}   {}                                              4. Definition of midpoint

5. ΔHIJ ≅ ΔLKJ  {}                                         5. By ASA rule of congruency

Step-by-step explanation:

Alternate angles formed by the crossing of the two parallel lines \overline {HI} and \overline {KL}, by the transversal \overline {HL} are equal

Vertically opposite angles formed by the crossing of two straight lines \overline {IK} and \overline {HL} are always equal

A midpoint divides a line into two equal halves

Angle-Side-Angle, ASA rule of congruency states that two triangles ΔHIJ and ΔLKJ, that have two congruent angles, ∠IHJ in ΔHIJ ≅ ∠JLK{} in ΔLKJ and ∠IJH in ΔHIJ ≅ ∠KJL in ΔLKJ, and that the included sides between the two congruent angles is also congruent \overline {HJ} ≅ \overline {JL}, then the two triangles are congruent, ΔHIJ ≅ ΔLKJ.

5 0
3 years ago
One number is 4 times<br>a second number. The sum<br>of the two numbers is 30.<br>find the numbers.​
olchik [2.2K]
The first number would be 6 and the second would be 24

x+4x=30, in which x=6

Hope this helped :)
4 0
3 years ago
4(7x - 1) = 3(2x + 1) - 4(x + 6)
mihalych1998 [28]

Answer:

x = -17/26

Step-by-step explanation:

4(7x - 1) = 3(2x + 1) - 4(x + 6)

distribute 4 through the parentheses (do 3 and -4 as well)

28x-4=6x+3-4x-24

collect like terms

28x-4=2x+3-24 --> 28x-4=2x-21

move the variable

28x-2x-4=-21

collect like terms

26x=-21+4 --> 26x=-17

then divide

hope this helps and makes sense! :)

7 0
3 years ago
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