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2 years ago

GIVING BRAINLIEST!! PLS HELP :((

Mathematics

2 answers:

Vladimir79 [104]2 years ago

3 0

The answer is 2 to the power of 6

Elan Coil [88]2 years ago

3 0

Answer: I believe it is 10^5

Step-by-step explanation:

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Breann solved the system of equations below. What mistake did she make in her work?

mihalych1998 [28]

If 2x+y=5, then y=5-2x, so she substituted correctly.
x+4x=5x, so she combined like terms correctly.
She didn't subtract 10 from both sides, she added 10 to both sides.

Check the solution:
$2x+y=5 \hbox{ and } x-2y=10 \\
2 \times 4-3=5 \hbox{ and } 4-2 \times (-3)=10 \\
8-3=5 \hbox{ and } 4+6=10 \\
5=5 \hbox{ and } 10=10 \\
\checkmark$

The answer is: She made no mistake.

8 0

3 years ago

Read 3 more answers

1. Remember what we know about vertical angles and solve for x. (SHOW WORK)

marusya05 [52]

Answer:

Ans 1. $x= 7$

Ans 2.a.

$\overline {AC} \cong \overline {JL} \\\textrm{is the additional information required to prove the triangles are congruent by SAS postulate}$

Ans.2.b.

$\overline {BC} \cong \overline {KL} \\\textrm{is the additional information required to prove the triangles are congruent by the HL theorem}$

Step-by-step explanation:

Solution:

Vertically opposite angles are equal.

$\therefore (x+16) = (4x-5)\\\therefore (4x-x) = (16+5)\\\therefore (3x) = (21)\\\therefore x = 7$

2.a.

proof for Δ BAC ≅ ΔKJL by SAS postulate.

InΔ BAC and Δ KJL

BA ≅ KJ Given

∠ BAC ≅ ∠ KJL {measure each angle is 90}

$\overline{AC} \cong \overline{JL}\ \textrm{additional information require to prove the tangles are congruent by SAS postulate}\\\therefore \triangle BAC \cong \triangle KJL\ \textrm{By Side-Angle-Side postulate...PROVED}$

2.b.

proof for Δ BAC ≅ ΔKJL by HL theorem.

InΔ BAC and Δ KJL

BA ≅ KJ Given

∠ BAC ≅ ∠ KJL {measure each angle is 90}

$\overline{BC} \cong \overline{KL}\ \textrm{additional information require to prove the tangles are congruent by HL theorem}\\\therefore \triangle BAC \cong \triangle KJL\ \textrm{By Hypotenuse Leg Theorem......PROVED}$

5 0

3 years ago

Jen received some birthday money she brought a new pair of shoes for $24.95 and socks for $4.50 she gave your brother $25 and sp

Fudgin [204]

Answer:

$140.17

Step-by-step explanation:

24.95+4.5=29.45+25=54.45+(42.86×2)=140.17

7 0

2 years ago

Find the slope and y- intercept of the line. y = 6x-9

olya-2409 [2.1K]

Answer:

the slope is 6.

the y-intercept is -9

3 0

3 years ago

Brown ball weighed 1.6 pounds and the green ball weighed 0.39 pounds if he placed both on the scale at the same time what will t

NemiM [27]

1.6+0.39 which is 1.99 pounds.

8 0

2 years ago