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postnew [5]
3 years ago
13

2t−5=−10 what is t I really need help

Mathematics
2 answers:
geniusboy [140]3 years ago
8 0
2t - 5 = -10
2t = -10 + 5
t = -5/2

In short, Your Answer would be -5/2

Hope this helps!
Galina-37 [17]3 years ago
5 0
t = -2.5 or -\frac{5}{2}

Here's how we find that out:

2t -5 = -10..........................We need to get the variable, t, by itself

2t = -5................................Add 5 to both sides

t = -2.5...............................Divide both sides by 2

So, your answer is - \frac{5}{2} 0r -2.5

I hope this helped! Have a great day! :))
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Darina [25.2K]
The value of x is 4.
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2 years ago
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In the rectangular coordinate system above the area of pqr is what fraction of the area of lmn
enot [183]

In the rectangular coordinate system above the area of PQR is what fraction of the area of LMN

From the attached figure we find the area of PQR and area of LMN

WE know the formula for area of triangle = \frac{1}{2} * base * height

In the triangle PQR,

Base PR= 4

Height = distance between x- axis and point Q = 4

Area of the triangle PQR = \frac{1}{2} * 4 * 4 = 8

Similarly we find the area of LMN

In the triangle LMN,

Base LN= 12

Height = distance between x- axis and point M = 12

Area of the triangle LMN = \frac{1}{2} * 12 * 12 = 72

Hence , \frac{area PQR}{Area LMN} = \frac{8}{72} = \frac{1}{9}

Area of PQR = \frac{1}{9} of the area of LMN

3 0
2 years ago
If x2 - 4 = 45, then x could be equal to 9 3 5 -7 -4
Ivanshal [37]
Transpose the constant on the left hand side of the equation to the right side. The equation becomes x² = 45 + 4, 
                                               x² = 49
                                           x = sqrt(49) 
                                            x = 7 and x = -7
Only -7 is on the choices. Thus, the answer is x = -7.
5 0
2 years ago
ILL GIVE BRAINLIEST!! PLS HELP!!! Ten students are taking both algebra and drafting. There are 24 students taking algebra. There
Galina-37 [17]

Step-by-step explanation:

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6 0
2 years ago
Elenor and Max used two rectangular wooden boards to make a set for the school play. One board was 6 feet long, and the other wa
Tanzania [10]

Answer:

The width is 5.25 feets

Step-by-step explanation:

The dimensions of the two rectangular wooden boards that Elenor and Max used to make a set for the school play are shown in the attached photo. The widths of the two boards are equal. The lengths are 6 feets and 51/2 feets

Area of each rectangular length, L × Width, W

Area of the longer rectangular board

= 6x W = 6W feet^2

Area of the shorter rectangular board

= 11/2 x W = 11W/2 feet^2

The area of the set is 60-3/8 square feet. This is equal to 483/8 feet^2.

Therefore,

483/8 = 6W + 11W/2 = 23W/2

8 × 23W = 483 × 2

184W = 966

W = 966/184 = 5.25 feets

3 0
2 years ago
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