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Stella [2.4K]
3 years ago
6

I'm stuck with this simultaneous equation. Can anyone help me please?

Mathematics
2 answers:
professor190 [17]3 years ago
7 0
Multiply (h+3t= -10) to get 2h+6t=-20.

(<span>2h+6t=-20</span>) - (2h+t=-8) to get 5t=-28
therefore t=-5.6

put t into any equation. i.e (2h-t=-8) = 2h+5.6=-8
therefore 2h = -13.6
h=-6.8
slega [8]3 years ago
3 0
Would use elimination method.

h + 3t = -10    ×2
2h - t = -8

2*(h + 3t) = 2*(-10)
2h + 6t = - 20......new equation 1.

2h + 6t = -20
-
2h - t    = -8            To eliminate h.
__________
0 + 7t = -20 - -8

7t = -20 + 8

7t = -12

t = -12/7

From first equation:    h + 3t = -10, substitute, t = -12/7

h + 3*(-12/7) = -10
h - 36/7 = -10
h = -10 + 36/7
h = 36/7 - 10

h = (36 - 70)/7
h = -34/7

Therefore,  t= -12/7 and  h = -34/7
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Dafna1 [17]

Answer:

60°

Step-by-step explanation:

Am equilateral triangle is a triangle that has all its sides and angles equal. Note that an equilateral triangle has 3 sides and angles.

Let the angles be a, b and c

The sum of angle in a triangle is 180°, hence;

a+b+c = 180°

Since a = b = c

The equation becomes;

a+a+a = 180°

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3 years ago
Write and solve an equation to answer the question. after earning interest, the balance of a checking account is $560. the new b
nikitadnepr [17]
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after we estimate the divisior we get 240. 560 - 240 gives us 320.
the answer could be 320.
7 0
3 years ago
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Nana76 [90]

Answer:

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Step-by-step explanation:

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4 0
2 years ago
Which group of three squares will form a right triangle when<br> joined at their vertices?
Ilia_Sergeevich [38]

Answer:

Option ?) 17 cm, 15 cm, 8 cm

<em>The assignment should have </em><em>four options</em><em> to choose from, but there is only a picture of two. </em>

Step-by-step explanation:

<em>None of the squares </em><em>shown</em><em> form a right triangle. To determine if sides form a right triangle, you use </em><em>this</em><em> formula:</em>

a²+b²=c²

<em>We are given two options in the picture.</em>

Option A) 18, 10, and 8.

Option B) 12, 9, and 6.

<em>So, now we need to apply the formula:</em>

Option A)

║8² + 10² = 18²

  ↓

║64 + 100 = 324

  ↓

║FALSE

Option B)

║6² + 9² = 12²

  ↓

║36 + 81 = 144

  ↓

║FALSE

<em>Both of these options are false.</em><em> But, I decided to look up this assignment to check my answer. It turns out, there are </em><em>4 options</em><em>, and you only had a picture of two. So, what's the answer?</em>

<em />

<em>There is an answer choice that shows 3 squares with the lengths of 17 cm, 15 cm, and 8 cm. </em><em>This is the correct answer</em><em>.</em>

<em />

<em>For proof, let's apply the formula:</em>

Option ?)

║8² + 15² = 17²

  ↓

║64 + 225 = 289

  ↓

║TRUE

<em>[Since the option isn't shown, I'll put a '?' so there is no confusion]</em>

8 0
3 years ago
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juin [17]

Answer:

2 20/24

Step-by-step explanation:

divide 4/2=2

then do 5/8÷3/4=5/8×4/3=20/24

u basically inverse 3/4

2 20/24

7 0
3 years ago
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