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alexandr402 [8]
3 years ago
5

Three students were given the expression shown to simplify 1-8(10x-3)​

Mathematics
2 answers:
madreJ [45]3 years ago
6 0

Answer:

-70x + 21

Step-by-step explanation:

1-8(10x-3)

-7(10x-3)

Use distributive property

-70x + 21

(This is how we learned to do it in my school)

xxMikexx [17]3 years ago
5 0

Answer:

80x-25

Step-by-step explanation:

first you distribute the 8 in to the parentheses:

8(10x-3) 8×10x=80x 8×3=24 1-80x-24

then you add the like terms:

24+1=25 80x-25

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Sloane kicked a soccer ball at a speed of 48 feet per second. If the ball never leaves the ground, then it can be represented by
Ierofanga [76]

Answer:

For t = 0.33 s, H = 14.0976 feet;

For t = 3 s, H = 0 feet;

For t = 16 s, H = -3328 feet;

For t = 48 s, H = -34560 feet.

Step-by-step explanation:

Assuming there's a typo on the problem and it wishes to determine the distance traveled by the ball in the given times instead of the time, we can solve it as shown below:

For t = 0.33 s:

H(t) = -16*t^2 + 48*t\\H(0.33) = -16*(0.33)^2 + 48*0.33\\H(0.33) = -1.7424 + 15.84\\H(0.33) = 14.0976 \text{ feet}

For t = 3 s:

H(t) = -16*t^2 + 48*t\\H(3) = -16*(3)^2 + 48*3\\H(3) = -144 + 144\\H(3) = 0 \text{ feet}

For t = 16 s:

H(t) = -16*t^2 + 48*t\\H(16) = -16*(16)^2 + 48*16\\H(16) = -4096 + 768\\H(16) = -3328 \text{ feet}

For t = 48 s:

H(t) = -16*t^2 + 48*t\\H(48) = -16*(48)^2 + 48*48\\H(48) = -36864 + 2304\\H(16) = -34560 \text{ feet}

7 0
3 years ago
Read 2 more answers
Directions: Use the product rule to simplify the following monomials.
statuscvo [17]

Step-by-step explanation:

Multiply everything in the parenthesis.

24. (2xy)( -4x²) + (6x)(6x²y)

---> -8x³y + 36x³y

= 28x³y

25. (2ab²)(4a²b³) - (10a³b)(6b⁴)

---> 8a³b^5 - 60a³b^5

= -52a³b^5

Sorry, i cant turn the 5 into an exponent on my phone lol. but i hope this helps.

5 0
3 years ago
Read 2 more answers
I don't understand how to do this so please explain or show me how to get the answer
nekit [7.7K]

Answer:

m<ADB=70°

m<ADC=110°

m<DAC=45°

Step-by-step explanation:

<ADB=<ABD(being isosceles triangle: AD=AB)

<ABD+<ADB+<DAB=180°(sum of the angle of triangle is 180°)

2<ADB+40°=180°(<ADB=<ABD and <DAB=40°)

2<ADB=140°

<ADB=70°

<ADB+<ADC=180°(being straight angle)

70°+<ADC=180°

<ADC=110°

<ADC+<ACD+<DAC=180°( sum of the angle of triangle is 180°)

110°+25°+<DAC=180°

<DAC=45°

4 0
3 years ago
A training field is formed by joining a rectangle and two semicircles, as shown below. The rectangle is 89 m long and 64 m wide.
Bas_tet [7]
Im not too sure about this one
5 0
3 years ago
Which system of equations has infinitely many solutions? On a coordinate plane, 2 lines are parallel to each other. On a coordin
bogdanovich [222]

Answer:

On a coordinate plane, a line has a negative slope

Step-by-step explanation:

If a graph only shows one line, there is an infinite amount of solutions. We need two separate line equations to cross at a point in order to find the solution to the system. However, if a graph shows two parallel lines that never cross, there are no solutions to that systems of equations.

7 0
3 years ago
Read 2 more answers
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